If you can't have successful tech giants, you can have principles. If Apple/Meta/Alphabet were European companies the EU regulators would have absolutely no scruples about these things.
Every country talks 'free trade!' out of one side of their mouth, and implements protectionism via various concerns about health/safety/fairness out of the other when it's expedient. The US isn't any different, it's just not tech companies we're worried about (except some clock app that the Gen Z kids are obsessed with).
I really don't think the oil and railroad monopolies were broken up for the benefit of consumers, or due to some high-minded principles. They were broken up at the behest of other domestic industries which they were strangling, and those industries had the political clout to take on the monopolies. Arguably the same thing happened with the AT&T monopoly.
Every country talks 'free trade!' out of one side of their mouth, and implements protectionism via various concerns about health/safety/fairness out of the other when it's expedient. The US isn't any different, it's just not tech companies we're worried about (except some clock app that the Gen Z kids are obsessed with).