It’s interesting that you can’t deny coverage for pre-existing conditions in the U.S.
Of all the morally reprehensible things that US insurers do, I feel that hypothetically increasing premiums or instituting a waiting period for pre-existing conditions would be nowhere near the top of the list. Forcing all insurers to cover for pre-existing conditions raises premiums, and leads to adverse selection. It would be like a car insurer having to assume that you’ve had your licence suspended in the past, when in fact most of us haven’t.
I have no doubt that some insurer practices are immoral and deceptive – including the use of AI to process claims. I work in litigation and sometimes I act against insurers (sometimes I act for them) and I see the gamut of conduct from good faith to bad faith. To the extent that they make bad faith decisions, they deserve criticism. If it's bad faith to a criminal standard, they deserve punishment. But the immorality lies in the deceptiveness of a decision or the failure to abide by terms. It doesn’t lie in the deprivation of resources as such.
You could before the Affordable Care Act in 2010.
Also, this was paired in the ACA with a requirement for universal coverage. If you were young and fit (and invincible) and so skipped coverage, you were fined essentially the amount of premium. This was exactly to keep the insured pool from reducing to the most sick, and making premiums spiral. Republican efforts during the first Trump administration eventually led to that penalty being lowered to $0, in the hopes said death spiral would happen. Only, it hasn't. The ACA has continued to grow enrollment since then.
Universal coverage means the young and healthy subsidise the premiums of the old and chronically ill. It would be like all drivers being categorised as having the same driving history. Great for someone who's had a DUI conviction. Not so good for the person without a speeding fine in 20 years.
Kind of what the point of insurance is, isn't it?
The comparison of health insurance with car insurance risk pooling is fallacious as it rests on a false equivalency:
Car insurance is required to cover a risk that is imposed on others while exercising the privilege of operating a piece of dangerous equipment in shared public space.
Stratifying the pool of the insured into risk pools with premiums proportional to the risk brought to bear on the public makes perfect sense when it comes to car insurance.
Access to affordable health care is a nearly universal need that arises from unpredictable biologic events/injuries and is brought into being by merely existing as a human being. (And yes, there are risks imposed on others by simply living, such as infectious diseases etc., but that veers into public health, not individual health which is what concerns health insurance.)
In addition, the comparison fails on the grounds that the pool of the young and healthy is somehow comparable to people who forego driving a car and therefore do not require insurance.
It does not take much to realize that young and healthy people do carry a risk of becoming ill, whereas it is impossible for a person who does not operate a car to become involved in an at fault motor vehicle accident while driving a car.
The false equivalency fallacy might be the most common logical fallacy employed in bad faith arguments and is also rampant in meme level reasoning, but typically does not hold up on even cursory evaluation.
The false equivalency fallacy is an indicator of either malicious intent (typically a derailing effort) or weak thinking on the part of the writer/speaker.
We seem to get a lot of weak thinking and opinionating from relatively clueless Australian posters who for, some reason, are interested in American politics - is there something in the water over there or is it simply that life is so boring on the island that even discussions of US healthcare become a source of entertainment.