If you don't have insurance in Germany you'll have to pay for that yourself as well. That's rare, but it happens especially with the precariously self-employed.
The issue with the US system is that you can't have it be both non-compulsory but also that coverage must be offered to everyone, no matter their state of health. Then you'll have a few healthy people pay huge premiums to finance treatment for those who never bought insurance until they're sick.
It is my understanding that a compulsory purchase (as in Switzerland) would be unconstitutional, so I guess "Medicare for all" in the form of a tax would actually be the next best thing. Just keep in mind that with US levels of healthcare salaries, that wouldn't come cheap.
The difference is GKV being the default, and opting out of that kind of hard. You have to earn €5,062+ per month, for a start [0]. And the step is intentionally hard to reverse. I consider that a decent compromise. At that point people have to actively shoot them self in the foot, and I've little pity for those.
If you didn't opt out, thus are still under the GKV, the system will cover emergency services. Even if you haven't payed (yet).
[0] https://www.bundesaerztekammer.de/weitere-sprachen/english/h...
It's not hard at all, just go self-employed and you have the option.
> And the step is intentionally hard to reverse.
Yes, so that people towards the end of their lives don't profit from a system they never paid into. You're stuck with expensive private insurance for the rest of your life. In the US however, you would qualify for Medicaid.
> At that point people have to actively shoot them self in the foot, and I've little pity for those.
It's actually not that uncommon for people to fall into the trap of working self-employed for most of their lives, then retiring poor because they never paid into the pension system and their private insurance costs them over 500€/month.
In Switzerland, it is compulsory to purchase insurance, there's a basic plan that all insurers must offer, and if cost exceeds a certain fraction of the income, the state chips in.