Doubt that competition is the over-riding answer. The 'monopoly' position is so rich and powerful they have (and will continue, unless power is diminished) bought out these upstart competitors. As I see it, we are at another monopoly crises in this Country and the beed for breaking them up (as was the case years ago) is real and acute.
So they're big, and they're powerful, and they control many of the platforms folks in social media use. All true. They can't be replaced? They are banning innovation or entrepreneurs from creating other platforms? They can't be supplanted by superior content, or better access to open forums that provide valuable information?
I don't believe that.