The base case isn't resolution. It's controlled escalation with higher compliance spend, modest margin drag, and forced substitution as the biggest platforms build moats from regulatory complexity itself.
The US admin escalation is likely a spasm, and if not a cause of bifurcation rather than response. The base case is shoulder shrugs anywhere outside the USA. The endpoint is no market access for non-compliant platforms of any size. Which does not mean a ban or tech blockade, but the absence of possibility to interact with the EU market as corporates, including the ad market e.g. The law of two feet is the largest fine here (not just the platforms need to be compliant, their businesspartners too, and for them to walk is the cheaper compliance path.