The hardest part is the psychology. People think they have to be on the big platforms as that is where their friends and favorite streamers are. Willpower can bring back the old platforms onto the current fast internet. Critical and free thinking people can choose to ignore the big platforms if they wish. People can go to local stores to buy most things. There are arguments for and against all these points but I am choosing the aforementioned options and accepting the psychological challenges.
People can use old style self hosted platforms as a "fallback" and once people realize it is more private and they can speak freely amongst their friends it can get comfy real fast. Glowies are seething.
Some friends and I have private forums and chat servers. We talk shite all the time about Reddit threads yet none of us have Reddit accounts. We talk about HN threads, brain rot on Twitster and many other platforms free of censorship, free of voting brigades, people trying to force narratives, etc... Oh and most important, free of "AI".