It's somewhat intractable at this point unless or until we can figure out how to structure society in a way that can actually prevent it. Not sure we have the organizational knowledge at this point.

The government used to have better guards in place, but then what happened? They got weakened because of the monied interests already existed were successful at largely capturing the government. Guess what else happened during much the same time period; The government largely stopped breaking up monopolies, and many unions were busted or otherwise weakened or eliminated.