It is a spectrum of course, but a 500 Euro out of pocket maximum is probably better described as taxpayer funded healthcare.
The US is pay $400 to $1,200 per person per month from age 0 to 64, and then pay up to $8,700 individual / $17,400 family per calendar year.
At age 65, the government starts paying for your hospital care assuming you or your spouse paid Medicare taxes for at least 10 years, and you then have to buy a nebulous blend of subsidized care / insurance for other things like medication, doctor visits, etc.