Earlier quoted context omitted.
There is a difference between big companies and monopolies. Big companies will likely always be the ones offering the highest salaries and they'll always exist. Once they monopolize the labor market though: they'll no longer have a need to offer those wages as high (even if they're the highest within the market).
How do you break up alphabet?they will just move their corporation over seas, set up in africa and avoid any monopoly breakers. The government has no power over these companies. They would have to raid the offices and send the ceo to prison before alphabet agrees to break their monopoly.
This happens all the time in the space industry lol.