It is changing already, just look at Blacksky.

What "regional lock-in" are you talking about? Isn't all the bluesky tech USAian? Aren't all the technical decisions made in the US? If they decide to introduce some kind of filtering in the code, is the EU side going to copy-paste the code , remove the offending parts, and then host it? I doubt they'll be able to keep that up for long. They are facing millions of dollars across the pond.