Ambiguous unnamed faceless special interest groups, not singularly powerful individuals are in actuality the greatest threat among the American people.
You are under duress and are being looted by a fraction of society you don’t even acknowledge exists among you.
The modern western “oligarchs” are only manifestations of our collective psychology in individuals with greater means. Sure, their recklessness and specific interests may too be concerning.
https://en.wikipedia.org/wiki/Collective_action_problem
as what kills us the way an asteroid killed the dinosaurs. The smaller a group is (billionaires) the easier it is for them to organize. Near universal interests such as "opposition to political corruption" are quite difficult to address.