"Statements such as 'crypto is guaranteed to fail' have no semantic content as they are mathematically indefensible."
There is no way you are serious here. This is math-based absolutism applied to a field that doesn't deal in absolutes. Replace the word "crypto" in your statement with the phrase "PayUsToMailHumanShitToYou.com", and read it back to yourself. Nobody on the forum uses phrases like you've described as descriptors of mathematical certainty, and it's bullshit sophistry to act as though they do and then pretend you're smarter than everyone else for spotting a mathematical error in a non-mathematical sentence.
I agree math-based absolutism does not work in fields that are too complex for such black-and-white decision making.
The gist of many of the previous replies is, in essence, that crypto is destined to fail. Your hypothetical company about feces seems to have a very low success rate, but humans are unpredictable and perhaps it would find a niche market among fertilizer enthusiasts / fetishists / pranksters.
These replies often come from the frame of mind that it's inconceivable for this new technology to have any long term impact or success, because of short term problems.
Use bitcoin for a short while and it becomes clear for example that Western Union is facing a future similar to Kodak in the 90s, unless they can adapt. The ability to remit value across great distances no longer requires an intermediary to take a large cut.
I think this technology will have little long term impact or success because of structural, not short term, problems. Western Union is an interesting example. In today's world of electronic bill pay offered by every bank, as well as Paypal and credit cards, what on Earth do we need Western Union for? The answer is in many parts of the world people don't have access to a traditional banking system, and need to be able to send and receive
cash. Bitcoin isn't cash, so it doesn't help with that problem. As an aside, while WU is a legitimate company, the irreversibly of WU transactions and accompanying scams have essentially eliminated it as a viable method of money transfer
except for when both parties already know each other because the mere mention of WU screams "scam" to most people. That's not a bright future for Bitcoin.
Another structural problem, which is actually two structural problems, has to do with contracts. Namely, our economy (and some say civilization) relies on the ability to pay for goods and services now for delivery in the future, and receive goods and services now, but pay for them in the future. Mortgages, wages, Amazon Prime, construction, your bar tab, all operate on this principle. But it is all supported because most contracts are legally binding, there are are legal ways to seek relief in the event of noncompliance.
The other structural problem is that you can't enter into contracts priced in Bitcoin. I know down to the penny how much my mortgage payment will be ten years from now. But there is no way I could price it in Bitcoin because the price isn't stable. You can't even price a contact this week in Bitcoin. Most businesses have margins that too small for that risk. Transaction costs also play into this, because while you know how much MasterCard will be charging you next month, you have no idea what the Bitcoin transactions will cost you. You can't do business like that. Maybe as a novelty, but it doesn't scale. The easy solution is don't accept Bitcoin.
The next structural problem is that Bitcoin doesn't scale. Because of the blocksize limit, the theoretical number of transactions per second is also limited--to a tiny number. Far too tiny to support the economy of even a reasonably sized city. There are proposed workarounds, but then you don't have Bitcoin, do you? You have some other coin called BitcoinFun or something. And you better get on the BitcoinFun fork fast before everyone stops using the old Bitcoin and its value goes away. On the flip side it doesn't matter if a dollar bill was issued 20 years ago, or 20 minutes ago. It still spends the same.
The next structural problems is that in almost every country (maybe every country, I dunno) taxes and wages must be paid in legal currency. Since taxes and wages are typically two of the biggest if not the two biggest expenses of any business, businesses need dollars to stay solvent. You gotta make payroll and you gotta have dollars to do that. And let's say you booked a lot of sales at Christmas when Bitcoin was high. Now in April taxes are due, and Uncle Sam wants his cut and so you go to sell some of your Bitcoin which you've been saving just for this occasion. Oops, Bitcoin is half what it was, but Uncle Sam doesn't care. He wants the December profits even though that money evaporated, which could be very painful. Like shut down your business and seize your assets painful. The easy solution is don't accept Bitcoin.
I could go on and on but hopefully you see my point. The last point alone is reason why Bitcoin or any crypto will never see any significant market penetration. There are too many structural problems.