the trouble with big tech for the USA is that everyone else (at least in europe) is unable to compete as long as these companies are able to be so large they squeeze out (or buy out) all possible competition.
Similar to how it's difficult to go to war with countries that supply you energy (like.. Germany's recent tough time with Russia): USA being in this position means they dictate the rules of the internet and internet companies. This is an amazing position politically because they are the de facto owners of the economy for the next century.
Imagine making a business without AWS, GCP or Azure? Imagine Making a business without Google Docs or MS Office? -- it's unfathomable to most, I promise, and that's a great amount of power.
All they have to do, is not break the monopolies.