Companies such as Facebook, Amazon and Google are so large and powerful that they are bad for consumers or society.
Google can, and has, change the web single handedly. Other companies and browser-makers have no choice but to follow due to Chrome's enormous market share and Google's massive market change in services.. I wouldn't call that good for consumers.
AMD has significantly better processors at the moment on a sliver of Intel's R&D budget. Innovation is happening at startups and small companies (which are then bought by the incumbents). I highly contest your statement that Google size is necessary for the best consumer R&D.
i.e. EU companies are not as competitive, presumably lack scale for lower pricing, lack scale to invest into expensive R&D
And that's bad for consumers