Sure we did. We voted with our wallets. I'm not sure why you believe it would be any different if we _had_ elected these companies with votes.
In the current policital landscape in much of the western hemisphere has lots of people arguing for restrictive policies around speech or access to healthcare.
At least with the megacorps there is the potential to build a competitor. If they were heavily regulated good luck getting your account reactivated when the government sanctioned monopoly decides it doesn't like you.