A good example would be Jason Calcanis. I've never met him in person (though I did come within 5 feet of his office when I interviewed at Mahalo). He comes across as someone I would never want to have dealings with, business or otherwise. Good thing for him I'm just a small fish. But I would probably feel the same way if I were the CEO of a big company looking to buy Mahalo. But I bet Mr. Calcanis wouldn't want to be bought out anyway.
An excellent opportunity has arisen for two almost identical companies, A and B, but it involves ethics that would make a decent person uncomfortable. A is run by a decent person, and they skip the opportunity because it's the decent thing to do. B is run by an asshole, and they jump at the opportunity with glee, maybe even with a small chuckle at all the companies that would have passed up the opportunity on ethical grounds.
Company B is now better off, because of, not despite, their asshole.
Counter-examples include Warren Buffett, who is regarded as a sweetheart. Larry and Sergey are famously nice, though they've apparently had their moments of being assholes. Sam Walton was nice to his people but ruthless in every other way.