If this can be built, build a twitter clone.
As each big entity/celebrity quits twitter or starts having serious conflicts, approach them to cross-post their content to the new clone site.
In a year the masses will follow.
Once Musk misses a billion-dollar-per-year payments a few times to the Saudis they will own twitter and then it will be like TikTok censorship the next time they murder a journalist they disagree with.