I would disagree with this. As has been proven by high rollers on both the right and left. You're immoral billionaire's money is just as good to these 'hoes as corporate money.
Because a billionaire is just as much a product of the system than a company is. Nobody makes a billion dollars through their own work, they make it by extracting value from other people's work. Which means their wealth is a product of and dependent on the system, thus they can be trusted to be utterly loyal to the system - slaves with golden chains, but slaves nonetheless.
Kings might have had it better than peasants, but neither could opt out of feudalism. It wasn't until capitalism - a new system - began making inroads that new opportunities opened up. And now capitalism is worn at the seams, at least in the developed world, and a seemingly neverending cascade of problems defy attempts to solve them through means acceptable to the system, which has caused a predictable retreat into fundamentalism - in this case free-market fundamentalism - for many who are heavily invested in the system. Whether this is the final crisis of capitalism, or whether it can ride out the storm once again by lifting the rest of the world to the developed status remains to be seen - but either way, it won't last forever any more than any previous system has.