The point of regulation in Europe is usually to protect people. Regulation in the US seems to be done with the purpose of protection companies. I'm not 100% sure, but this feels non-ideal for most people.
These people are the antithesis of "America is a Shithole", and they know it, so they keep their head down and point at the top 1% like everyone else. It's virtuous and pure to do so (and of course keeps the heat off them, the wealthiest contingent). If you isolate this group and compare them globally, it spells out why for decades so many white collar workers wanted to be in the US rather than Europe or the East.
Given it sounds like you've already done this, care to share the results you got? When I meet peers from the US, it still seems like things are more rough there, regardless of class, compared to in other countries, but this is of course based on my personal experience, would love to see concrete data about it.
https://www.youtube.com/watch?v=wTjMqda19wk
It was made 14 years ago and I don't think the US improved on any of those statistics.
It is hard to fire employee, especially when the company is doing good, yes.
It is a bit slow and administratively annoying to start a business in some countries, yes, though in those you can usually start operating while starting AND there are workarounds which is why there isn't enough pressure to stop it (eg, the german "pre made company shell" market is how you actually do it instead of making your own).
As I said I think idly about this a lot because when you feel like you've found a sort of eudaimonia you want to share it. But whilst personally, I feel like I won life's lottery being in the place and time I am, but that doesn't mean it's the one true way.
Wherever people are, I hope it's the right place for them personally