It probably isn't practical but you could do things like limit how much of the company is owned by one person and make sure that there are not special voting shares.
It's about the employees having an inverse incentive, to take actions just for the sake of it.
It's actually exactly about this attitude that somehow noone has the right to be on the platform, which, in turn, makes it easy to justify these forms of deplatforming and censorship, and the resulting self-censorship, too.