A very self-regulating little arbitrage, because the investors and the monopolies are in the process of merging themselves. This is the part most people seem unwilling to accept: these rich guys are dumb man. When you organize your whole society around rich kids having advantages it only takes a couple of decades before they're all just bad at their jobs.
This mafia capitalism isn't even good for the capitalists! They just can't get it together on a sustainable system!
The under appreciated drag is which is statistically more likely to be talented?
1. Someone from a wealthy / connected family
2. Someone who scrambled to the top of 100,000 other people
Folks can argue good schools, etc. all they want, but proven ability and drive to outcompete others should be a heavy counter argument against nepotism of all sorts.