The key point being made is that corporations give both an opaque knowledge of their funding and also a multiplier effect of that funding in a way that a wealth

The key point being made is that corporations give both an opaque knowledge of their funding and also a multiplier effect of that funding in a way that a wealthy individual cannot. You saw this immediately with astroturfing on candidates and issues all neatly hidden behind the PAC facade, with no way to discern who funded it.