In my dream world, every basketball or football team (american or the real one) would have its own Mastodon/Peertube instance and fans would sign up to a monthly subscription which would give them exclusive benefits, guaranteed prices for tickets (to kill the secondary market) and maybe even voting rights for larger decisions.
In my crazy dream world, sport teams would cut the middlemen and stop selling broadcast rights and broadcast everything direct to viewer. The tech already lets us have that, it's just that the whole thing is already quite profitable for the top execs so they don't really care about making it more accessible.