Everything you’ve said only stands for public university (which is better than private schools however). In the private world, you’re looking at ~10000€ a year.
So why in the hell would you pay 50k. That’s 33 times as much, guys just come to France
I believe it’s more expensive for foreigners to study in France now. You’re looking at ~3000€ per year IIRC.
There’s a push towards WebAssembly. Officially it’s not supported yet, but most browsers can handle it. I don’t know how mature the project is though.
But yeah, essentially everything on the web is JS.