Steve Jobs was a raging asshole, until it caught up with him. Turns out you can't bully cancer into submission.
Gates was involved in some seriously shady stuff and under his rule, Microsoft ruined a whole lot of companies, some of which thought they had a profitable agreement. And not by some sort of honest competition, but some very underhanded tactics.
Gates seems to have a much better reputation as of late, but he used to have a Borg style icon on slashdot for a reason. Lots of people didn't like him at all back when he was running the show.
You really think that though both Bill and Steve were assholes at the beginning of their careers, but the fact that Bill gentrified himself is why he hasn't died of cancer and Steve did?
Gates while an asshole in the business sense, from accounts that I've heard is a genuinely extremely intelligent person and has great technical understanding. While medicine is not his field from what I heard he seems to take well considered positions in that regard, and I think it's doubtful he'd sabotage his own chances of recovery in such a way.