Bingo. There aren't simply a handful of uniquely shitty people who just happen to be uber rich and when they're gone all will be fixed. When our economic and political systems enable and encourage the existence of such people, another one will always fill the void until we reform or replace the root cause.
I just explained this to someone who claimed killing the UHC CEO was "self-defense" for all the people suffering from all the wrongs he was responsible for at UHC. As if CEOs aren't easily replaceable and as if the new CEO would significantly change things.
Yeah, the guy might have done it to get revenge, but if it was self-defense, it was the worst attempt at self-defense ever.