Without going too much in detail, the "customers" cannot have perfect information regarding the treatment or course of action that's most convenient for them at a given moment, and they cannot freely decide when (or often whether) to make use of the service or not—"It's probably best I get appendicitis now that I can afford it rather than wait until next year".
Besides, why would you think socialist medicine would provide perfect information?
Where have I come even close to suggesting it would? Perfect information, to the extent it can be possible, is a requirement for a market to be efficient. What you call "socialist medicine" is by definition not a market, so perfect information is a moot point.
What universal healthcare can provide is the adequate incentives for providing early diagnosis, promoting preventative medicine, and giving safe and effective treatment. Where are the incentives for early diagnosis and prevention in free market healthcare?
Furthermore, pure free market healthcare provides an intrinsic incentive to extract abusive profit from a customer whose life or wellbeing are on the line, and who does not have the knowledge to decide whether they really need this expensive procedure they are being offered. This already happens to an extent under the current U.S. model. There's no reason to assume it wouldn't be even worse under a completely free market.
This is simply not true, as I said, risk factors into every price.
> Where are the incentives for early diagnosis and prevention in free market healthcare?
Don't you feel any incentive to take care of yourself with early diagnosis and prevention?
> pure free market healthcare provides an intrinsic incentive to extract abusive profit from a customer whose life or wellbeing are on the line
Just like if you're hungry. But food in a free market is cheap and plentiful.
> who does not have the knowledge to decide whether they really need this expensive procedure they are being offered.
The beauty of the free market is the consumer gets to decide who to trust.
> There's no reason to assume it wouldn't be even worse under a completely free market.
The US had a free market in health care up to the 1960s, and there's no evidence of the dark predictions you make for it.
Of course, there's that ultimate hammer of greenhouse gases everybody is using daily, but besides these it is hard to confirm this. And these have also many positive externalities (access to plastics, cheap energy) that cannot be ignored, otherwise we would live in carbon-zero economy already.
So I compared it to communism.
If you have something else to compare it to, feel free.
I'm lucky that I don't rely on our national health service for everything but I still gladly pay towards it's running so others can use it. Of all the things the government taxes me for directly or indirectly payments towards the national health care service ranks very low on the list of annoyances.
Here take this pill and boom life extension is on a different level than this is my carrot and even though I have 100's you can't have any.
The first will lead to bankruptcy the second to riots.
The most bizarre argument I've encountered yet.