Honestly, I would love to see a Wikipedia-style social media platform take off, but I really don't know if the finances could work out. Wikipedia already struggles, and it's obscenely useful. I don't think nationalization is really feasible for social media - at least in an American context - because it would be subject to the government's legal limitations on regulating free speech, which are extremely minimal. A federally run platform would not be able to remove literal unironic Nazism, which is probably going to be a bit of a turn-off to normal people.