Um, well…that’s really the whole point. Twitter is a private corporation, accountable only to their shareholders unless they do something illegal. It’s not the phone company, or a licensed over the air broadcaster. It has no state-granted monopoly with the accompanying regulatory constraints.
Now that of course cuts both ways. If Twitter decides to ban public figures who oppose Black Lives Matter, or find contemporary feminism risible, or believe that same sex marriage is wrong, they have every right to do so, and those who have those views are free to join another network, or start their own.
But if Twitter becomes “the social network for those of acceptable progressive views”. that may affect their user base, and eventually their share value. That’s Twitter leadership’s prerogative as long as they can handle the consequences.
