Most countries have anti-monopoly agencies. Whether they are of a mind to take action or not is another question entirely. Sometimes they are absolutely toothless. I miss the days when they used to do stuff like when MS was prevented from forcing browser/search engine (I cannot remember which) by default etc.

We absolutely should try to lobby as much as we can to nudge them to act, but I don't think we can rely on government agencies alone. MS recent acquisition shows that agencies are either not motivated, or not competent enough to oppose tech giants.