Zuck could 100% be elected president someday. It certainly seems more plausible than I would have said about Trump in say ~2012.

- The US worships rich and successful businessmen in general.

- Facebook is the most powerful media empire the world has ever know. It could easily mobilize to support a Zuck campaign.

- His charisma and current reputation are obviously votes against him but reputation is malleable (see previous point re: media empire) and political training could probably go a long way.