It's sad to see how poorly the U.S. has been enforcing (and interpreting) its own anti-trust legislation the last ~40 years. In my view that decline has been one of the contributing factors to the growing business oligarchy in the country.

Funnily, the previous EU commissioner for competition, who has spearheaded these clashes between EU and the U.S. tech giants has stated that the U.S. basically wrote the book on sensible anti-trust legislation back in the day, and that the EU's current laws are greatly inspired by the historical example of the U.S.