Ok so how does a cancer kill its host?
It grows until it consumes so many nutrients that the other living cells don’t get enough. The host literally starves even if he eats plentifully.
The same applies for the US: The billionaires are not only hoarding wealth, but by doing so they’re crippling the economy for workers and everybody besides themselves.
Each billionaire is an individual problem AND allowing billionaires to grab and monopolize so many resources and even looking up to them is a systemic problem.
Without the systemic problem which is Capitalism and the shallow, greedy present day society, billionaires would be treated the same as other hoarders - seen mentally derranged and stopped from going too far for their own good and the good of others.
There will always be nutters, but if the social system we have wasn’t broken, this very specific kind of nutter would never be allowed to cause the damage they do with their mental disease.