Mentorship is unfortunately broken because gone are the days of apprenticeships.

If you find a great mentor, do everything you can to learn quickly then jump ship to big tech and cash in.

This is kind of sad. I'm probably missing context here, but surely it's not necessary to rush out of a good working relationship with a good mentor. The most important things you'll learn from a good mentor can't be learned in a rush (like prioritization, project management, how to be a good mentor...).

In any case, I would replace 'jump ship' with 'pay it forward.'

Depends on the country, they are pretty much alive across many European countries.

Here are two examples,

A German site to search for technical schools with apprenticeship,

https://www.ausbildung.de/

The same for Portugal

https://www.escolasprofissionais.com/

A great mentor won’t waste their time on someone cynically using their time to cash out at Meta. Such a person can just get a CS degree and launch into Amazon for that.

Big Tech are just the IT enterprises of the modern day. It’s not where the action is and that experience is not so hot on the CV when it comes to early stage development.

There's also not much in it for the mentor other than the warm glow in the heart.