I'm not extremely optimistic either but at least in the US Lina Kahn is already on the right track with antitrust and the FTC already has two antitrust cases against Google in process. However, it's still an uphill because antitrust enforcement was either asleep at the wheel (or corrupted, depending on your perspective), which is partially why Google is in such a dominant position to begin with.

IANAL, the EU is also on the right track with antitrust but unfortunately seems very weak in terms of penalties and enforcement.

At this point, anything we can do to slow them down in any jurisdiction in a win. Even if antitrust enforcement is weak making Google at least have to defend this in a pro-forma way I think helps.