Our company started migrating our tech stack from USA to EU. We are about 90% there with a few small dependencies that could be resolved but we have not yet tackled.
What is the difficulty in getting away from gmail?
I did it a few years ago and I simply signed up for Fastmail and had gmail forward all email there. It forwards to a specific e-mail address so I can see if there are still people/companies that use the old email address.
The painful part was going through all my accounts to update the e-mail, but you can do it in stages if you follow the above.
Including EU sponsored programming languages and OSes?
This is something I think it is a blind spot we have and not big answer, because even if we take into account FOSS, ISO and ECMA languages, the biggest sponsors for those toolchains are US companies.
It will take decades to go back to the cold war days, of hardware, programming languages and OSes with European origin.
If you're talking about "US sponsoring" of Linux distros, then that doesn't matter either. If you mean Android and iOS, then you're right.
There's a super simple heuristic here. Does China care? If not, it doesn't matter. China doesn't care about adopting a Chinese-made programming language instead of Python or Typescript or Rust, meaning control over that isn't important. They do care about OS, which is why they put effort into increasing market share of phones with no American OS.
It doesn't matter, which is why China (the country) isn't putting weight behind it. There are hundreds of non-Chinese companies with a specific language for their systems. It's completely incomparable to things that China the country does care about, such as the aforementioned mobile OSes. Of course they'd rather the languages and everything else is Chinese-controlled, that's trivially true. But priorities make all the difference, and this one is incredibly low as so to be a waste of time to even mention until everything else is in place.
Depends on how much you want to control the delivery chain regarding possible backdoors, or suddenly losing access to a specific programming language on Github.
Even with cloning, those upstream changes are no longer available other than by non official channels.