That is the wrong solution. The problem isn't people making content decisions, it's market concentration. They have too much market power and it lets them get away with too much hamfisted behavior without losing users.
They've already gone far enough for the market to start to solve this. Rumble and Gettr and whatever else are gaining users. But it's producing an ideological split which is pretty dangerous. The other platforms don't set out to attract only the right, but when the censorship by the incumbents is one-sided, it's them who want to leave for somewhere else. Which only makes the incumbents lean more to the left.
What we need is some way to get left-leaning people to move to platforms without excessive censorship, which would both keep the balance and deter the incumbents from continuing to be heavy handed.
A lot of this is cultural. The thing where people cheer because their ideological opponent got silenced is cancer and needs to go away. Everyone of all stripes should quit platforms that do this, and then they wouldn't.
This is kind of like the thing where violence is impermissible except in self-defense. We need to cancel anyone who tries to cancel anyone.