You have the wrong set of billionaires in your sights. The truly dangerous billionaires are those on top of the Tech and Social Media Giants. They control the media and are busy restricting communication of ideas they do not like. They act in concert, control huge swathes of industry, impose boycotts on states, but are somehow immune to anti-trust prosecution.
You also seem to have argued yourself into a circle on immigration and endless overseas wars. You realize lax border enforcement and open immigration policies hurt the economic well-being of lower and working class people. But you end up lauding the Biden Administration which is pursuing those policies. Similarly you object to endless foreign wars, but again you praise the Biden Administration which didn't waste a week before bombing Syria. Your statements about immigration and foreign wars suggest you favor Trump's Populist policies in these areas. But you say you think Republicans are the ones pushing the policies you object to when it is mostly Establishment Democrats doing so.