So it's not about owning vs. renting property on the internet, it's about controlling the roads that connect the properties so you can keep the world out of your community.
bad_social_network was good 10 years ago, because it was controlled by "a friend of ours". Now it's controlled by someone who's perceived as "a friend of theirs" and it's therefore bad. So the politik aktivists move to good_social_network, and rave about the good there. Echo chambers be damned, we have control. Until the next "friend of theirs" buys it out, and rinse and repeat. So silly.
The other never has.
There can be technical differences between networks as well as social.