Honestly I think I may be even slightly more productive, but whatever, I make more than I can spend, I don't think any amount of money would make me work 5 days/week (I mean that quite literally, unless it was maybe for a couple months, and in the 1e6 ballpark, my time on earth is just too valuable to me).
I'm guessing this comment is along the lines of "companies don't pay for healthcare in Europe, so this doesn't apply", but there are other sources of overhead. Anything that is not a profit center is a cost center; buying you your workstation and software, having HR around to resolve disputes between employees, etc. Those things still happen in Europe.
