"Single payer" really just means "no choice, and no competition". I wouldn't really expect things to get better under such a system, and worse it would put a much larger percentage of our freedom on the chopping block.

Just look at the all the stuff they pulled over COVID. It would usher in a terrible era where everything you do is free for someone else to say no to, because "we all pay for that".

I give it 10 years under such a system until we have a similar supreme Court ruling to the one we got for interstate trade. Except this time blowing out their scope of power to anything and everything, with no more limits