No, some people
are "scumbags". I once worked for a company that suddenly ran out of it's startup money source and was forced to do a deal with a couple of "angel" investors ... who turned out to be devils.
They wrote into the agreement certain metrics that the company would have to meet after launch, and did everything they could to prevent it reaching those, e.g. firing the guy would would have made the sales, our multi-talented lawyer stepped up and made them. When Kleiner Perkins, who's connections could have been a make or break for the company, cold called us, these devils blew them off.
Their attitude was they'd rather have 100% of nothing (well, they probably thought it would have been something), and the company essentially died when 13 of us resigned en masse from the CEO down to all but one most junior engineer. (And then we had to go to the state to get our back pay for that partial pay period.)
I was in some of the last minute, try to save things face to face negotiations; these guys were malevolent. Not sure how they achieved net worths of 100 million and 500 million, but if they retained any control, they sure didn't use that money for good.