I personally don't see a social media platform that would succeed through a mandatory paid membership. The main interest in social media to the majority of user is the reach and read a large amount of users, and keeping it small and exclusive might not be an attractive feature to a majority.
I agree and disagree. One hand it’s free to signup and post whatever to my personal account and like a few pages. However the “reach” argument breaks down when the social media company starts filtering what a I do and don’t see. If I decide I want public reach too then I have to buy an ad space from the social media company for that reach. So if that’s true then the reach you get is a lie and you have to pay for membership anyways.