I mean that'll happen with literally any website, forum, BBS, subreddit framework out there. The idea here would be to create a forum stack where users can confidently contribute to knowing that no single entity has full control over all of its contents.
Obviously there's nothing stopping from some instances from creating closed or gated content, but the public facing ones with like 10-20 years of gardening input freely given by end users can never be taken away from the community, which is what's happening with Reddit and has happened with IMDB and countless others.