Theoretically, would it send a stronger signal to US regulators if Facebook simply shut down all operation in the EU? A pop up message to all EU citizens along the lines of “You may no longer access Facebook from within the EU due to X Y and Z from your government. As such, all of your data is unavailable for download and no longer subject to GDPR privacy regulations.” Would that be safer for Facebook in protecting its child companies (which presumably make up a large part of its value) in the US as an effective way to grandstand? Eventually the EU would have to come up with a compromise solution then, too, right? I can’t imagine everyday citizens being happy with the EU if they perceive they’ve blocked them from Facebook.
I’m not saying I would be on Facebook’s side (I definitely wouldn’t), but the sheer scale of Facebook as a global company makes me question the effectiveness of current antitrust law.
I’ve never seen a trade war between a company and a government. And I don’t want to.