These are the main problems as I see it: 1) Content creators are busy creating content, they have little time to create an independent membership site. For streamers, beyond the streaming there isn't a whole lot that one could offer on a membership site. Twitch owns you. Maybe game coaching? IDK. For a recipe creator on Tiktok, a membership site makes sense. You can offer full recipes and full walkthroughs with engagement on recipes. 2) You don't own your followers list - it's hidden behind by the social media company. If the algo changes, if you get a violation of ToS, and so on. You have no idea when you might lose your audience access. Owning the list protects you.