Capitalism is based on self interest , not altruism, so in our capitalist society we can expect to be capitalists (self interest) and at the same time expect others to be altruists .
This is why Plato suggested a Philosopher-King for his Utopia
So the big question is are Trump and Musk (already billionaires) in it for the money?
I guess if one has lived in the States for a stint, its hard to imagine otherwise.