It's too big, and he's too wealthy. He's in a unique position, where he can offset any short term losses by virtue signaling advertisers. The incredibly massive audience for their ads will always be there(because they're addicts in every sense of the word), so the advertisers will be back eventually. You can't fuck with the richest man on Earth, managing a platform with 230+ million users.
This will be realized shortly, and then the totally non-fascist left wing government, who has absolutely no interest in controlling speech, will start fucking with him.