I disagree with you that the use of data from multiple active exchanges would somehow break the decentralization of the protocol. Every node on the network would still have a say in accepting or rejecting new blocks proposed to be added to the chain. Changes in the set of good data sources for determining the currency creation rate would need to be publicized widely, and would not take effect until adopted by the majority of miners, just as any changes to the protocol already have to do. I don't intend to dive too far into the weeds on this. There are surely plenty of edge cases to consider, and the people who stand to profit from greater stability should work those out and make it happen. To your point that this system doesn't work for a brand new currency without an established market, of course it doesn't! Use whatever system you like to get the first currency units into existence. Once a robust marketplace forms you can feed that data back into your system to adjust the money supply as needed to reduce the volatility. You don't need to be stuck with a deflationary spiral forever just because you had one once.
It is amazing that after (what I'm assuming is) just a few hours of thought, you've solved the byzantine generals problem in computing that has been a problem since the dawn of computing. Just going by some of your suggestions tells me you don't understand the entire reason why bitcoin exists.
The evolution of the internet is actually a great analogy here. There are lots of internet technologies that came and went before we landed on the World Wide Web that eventually saw wide adoption. Just as one example, the Gopher protocol came out a few years before the Web as a way to share linked information over TCP/IP networks. A lot of what you can do with it is similar to what you could do with early websites, but it had some limitations that prevented it from winning wide adoption in the end. Betting on BTC isn't just betting that digital currencies will become widely used someday. I actually think that's reasonably likely myself! You're also betting that the BTC implementation of the digital currency concept will prove to be less like Gopher (promising technology with a few ultimately fatal flaws) and more like the Web (flexible enough to adapt to everyone's needs). On that point I have a very healthy amount of skepticism.
You do understand that bitcoin was not the first digital cryptocurrency, right? There were plenty of ones that came before it, but they were all susceptible to attack and had faults of their own. Bitcoin drew inspiration from several of them and some were even referenced in the original bitcoin whitepaper. Digi-cash, b-money, BitGold, HashCash, etc.
You're not understanding a critical aspect of security (my field is Information Security). I see people make the claim that "Bitcoin could be the next MySpace to Facebook", but this misses a critical point with regards to security. We don't use cutting edge technology when trying to secure things. The encryption protocols (SHA,RSA, AES, etc) in use today are protocols that have been around for decades and vetted by the greater public before the world is confident in their robustness in securing the world's most confidential data. The entire point of bitcoin is guaranteeing security through its protocols and decentralization. The longer bitcoin is in existence without fault, the more confident people get in having their money secured by the network. Consequently, the longer it is in existence and operational, the higher of a price is justified for that security that it provides. You're not going to have a brand new crypto-currency that doesn't have the same history as bitcoin that suddenly out of the blue the world will feel confident moving billions of dollars into it. That's just not going to happen and I'm absolutely confident in that. Barring a complete failure in the security of the bitcoin network (something I'm also confident won't happen), you're not going to see a sudden switch to a "newer and better" cryptocurrency.
If there were a sudden complete failure in the security of the bitcoin network, people certainly won't be quick to put money into another new one.
"Supply shocks?" Nearly 90% of the BTC that will ever exist (according to current protocol) already exists. For every 20,000 BTC that existed yesterday, not even 20,001 BTC exists today. Changes in supply cannot explain any significant portion of recent volatility.
I don't think you're understand how price is determine in markets. It isn't how much bitcoin that has been put into circulation that determines the price. The liquidity of that bitcoin is what does. It doesn't matter if all bitcoin have been mined or only 10% has been mined, it is the liquidity that determines how much the price swings. If I buy bitcoin and send it to cold storage not ever to be touched for 10 years, that bitcoin is taken out of circulation and doesn't contribute at all to market liquidity. How much bitcoin is actually liquid on exchanges is what really matters. If 99% of bitcoin is stored away in cold storage and only 1% is available for sale on exchanges, then it isn't going to take much money to chew through that liquid bitcoin for sale for the price to swing way up. Throughout 2020, the available bitcoin available on exchanges around the world has dropped by 20% and continues to drop. Glassnode, a chain analysis company, performed an analysis that showed that about 78% of bitcoin in circulation is considered "illiquid".
For example, on one of the most liquid exchanges in America (Gemini), there is only about 400 liquid bitcoin in sell orders from here until a price of $36,000. That means that an additional influx of only about $14 million will be enough to move the price of bitcoin thousands of dollars higher.
Also, miners (who produce new supply of bitcoin) generally sell this bitcoin to market since they're a business and must pay bills for infrastructure and electricity. So, given demand being equal, a halving in this new supply of bitcoin means that there will be much less new bitcoin being brought to market which means there is a supply shock to the market. This causes the price to go up (with equal demand), and thus with the price rising it brings in new demand and can bring massive price swings to the upside because of this large disparity between demand and supply.
So yes, this is a supply shock and I don't think you really grasp how scarce bitcoin is. It isn't about how much bitcoin has been mined that matters, like you claimed. People simply look at the price being tens of thousands of dollars without fully realizing how scarce and illiquid bitcoin really is. Again, there is no supply elasticity here.
On the contrary! I have no earthly idea how to reason about what a bitcoin should be worth. That's why I'm not buying them. I was hoping you could enlighten me with the thought process you use to decide about this. If it doubled in value next month would you be buying or selling? Why? What about if it halved in value?
It seems to me though that you're applying selective critique to bitcoin about what the price should be. By just about every measure imaginable, the stock market should not be at the prices it should be at today. Do you suggest to people that they should stop contributing to their 401k's or stop investing in the stock market until there there is a crash that brings things back in line with metrics that are more inline with history? No, I don't think you would, nor would I. We continue to invest in the stock market through massive overvaluations and massive crashes (fire sale!). We do so because we have a fundamental belief that over the long term (a decade or more), the value of the market will be greater in the future.
My point is that we don't apply any sort of fundamental price analysis to the stock market as to what a price should be. In fact, we actively discourage such a thing. TA active traders simply haven't been shown to be good at their jobs over the long term. Warren Buffet issued a bet to active traders to see if they could be the market against a passive investment strategy. The end result after 10 years was simply that active traders couldn't beat the market. Trying to reconcile what "fair price" should be against what the market is telling at any given point in time is a futile effort. It doesn't matter if the market is stocks, gold, bitcoin, or anything else. Active trading is a futile effort.
The truth of the matter is that I purchase bitcoin no differently than how I purchase or invest in anything else. I just passively invest each month on a regular basis regards of whether or not it goes way up or way down with full confidence that demand for bitcoin will be higher in 10 years than it is today. And it doesn't seem like I'm alone in that risk analysis. As I've said before, MassMutual an insurance company that has been in business for almost 200 years and whose sole business industry is about risk management, can look at bitcoin at decide that they should put $100 million of their reserves in bitcoin. If you feel that you've done more legal, regulatory, technical, and market risk analysis than this company and feel confident in being opposingly bearish on the matter, more power to you.
I'm not trying to convince anyone to buy bitcoin here. The only reason why I even initially entered this thread and the other one in this forum was because I saw so many blatantly incorrect statements being made about bitcoin that it was clear that many of the most harshest critics that I was reading here didn't seem to have much knowledge on the matter. Misinformation isn't going to help anyone whether you want to save money with bitcoin or not.