You have no idea just how much revenue Google et. al make from e.g. the EU. The shareholders would absolutely eat Google alive for just walking away from many billions of dollars rather than just complying. I've said this here before:
> A point we're still lightyears away from. The lengths they go to in order to operate in China are magnitudes greater than to operate in the EU, yet EU makes them $10+ billion more profit than China.
> What would actually happen is that the US would start seriously threatening (blackmailing) the EU to a degree where it's forced to relent long before Apple would pull out.
> Apple's estimated operating profit from the EU is around $40 billion dollars. If the US government wouldn't get involved, they could force Tim Apple himself to live on top of the Alps and he'd happily do it rather than lose that $40 billion, or shareholders would vote him out ASAP.
You can substitute Apple for Google or any SV big tech.
>We got a little peek into this when the GDPR was rolled out and many small and medium companies simply blocked GDPR countries rather than risk the massive fines spelled out in the GDPR.
So you do "% of global revenue", "gatekeeper/minimum size applicability" and so on. Absolutely trivial stuff, this has been figured out ages ago.