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.
Currently, our collective behavior is parasitic and destructive to the environment, yes. But it’s important to draw a distinction here - a virus or bacterial infection or a parasite are locked into their respective strategies. They cannot help being what they are.
We don’t get that excuse. Humans are the ultimate generalists; we specialized into learning and communicating new behaviors between ourselves. Unlike the flu or a ringworm, we have the capacity to change how we interact with the environment.