Why did some of the richest, most powerful people in the UK support Brexit?

Murdoch won’t own May or Leadsom. He has to own at least one party leader or he throws his toys out of the pram. As David Cameron has found out.
Murdoch will get his way because, as the old joke says, Sun readers don’t care who runs the country so long as she gets her tits out. And as neither candidate is going to do that - they’ll be ripe for a revolution.