I think he is hedging his bets. He wouldn't like to be on Trump's wrong side when he wins. He may even know something we don't about the election and as a farsighted CEO of a huge company, he is adjusting his course ahead of the upcoming events.
You could say that. He also fired a warning shot at Time warner aka CNN he would veto the merger with ATT.
He doesn’t want to have 100 million conservatives quit when the Republican candidate for President is banned for hate speech. The bias is too evident, too obvious they aren’t welcome on the platform - and he makes money based on the number of users.
Instead, you get the banning of lesser individuals for conservative views.
Facebook censors Michael Savage post of Muslims protesting
http://www.wnd.com/2015/12/facebook-censors-michael-savage-post-of-muslims-protesting/#KUbmc8AgDLMgc2JT.99
Facebook censors Pamella Gellar after 6/12/2016 attacks
http://www.breitbart.com/tech/2016/06/12/facebook-deletes-pamela-gellers-stop-islamization-america-page-orlando-attack/
Facebook Bans Gay Magazine Critical Of Islam
http://www.breitbart.com/london/2016/06/17/facebook-bans-gay-magazine-critical-islam/
Trump supporter BLOCKED by Facebook for complaining about site’s censorship of right-wing activists
http://www.dailymail.co.uk/news/article-3603345/Conservative-activist-Lauren-Southern-banned-Facebook-mentioning-censorship.html
You nailed it.