Hmm, well I guess that platforms would indeed be much less of a problem in a draconian antitrust system regularly shutting down the biggest ones (in a way forum

Hmm, well I guess that platforms would indeed be much less of a problem in a draconian antitrust system regularly shutting down the biggest ones (in a way forums are walled gardens with intrinsic limits to growth - the software on which they operate isn't closed though !), but in our world these aspect tend to strengthen each other... Also, this is like with dictatorships : yes, you can get lucky with an enlightened despot, but even those don't last long, and it becomes difficult to deal with a too entrenched power once it turns ugly.