The free-market oriented right is creating such alternatives. So many of the people I follow on Twitter and YouTube have set up presences on alt-tech platforms (to use during the times they get suspended or banned) that I have to maintain a spreadsheet to keep track of them.
The first problem that alt-tech faces is that when someone gets banned from Twitter or YouTube and has to move to Gab or BitChute, their potential audience drops by a factor of several thousand; and no one will hear them but their die-hard fans. The second problem is that the big-tech companies are natural monopolies and unless they screw up badly enough to kill themselves, they won't be unseated. That, however, may be happening now.
That’s great and I have an account there, but this problem probably needs a big high profile solution starting with a massive amount of capital.