> You don't understand the point of capitalism. It's not about making rich people richer.
Making the rich richer isn't necessarily the point, but it is an unavoidable consequence.
> Capitalism is about producing stuff.
Humans have been producing stuff well before the concept of ownership was invented, and certainly well before the massive wealth accumulation that is the hallmark of capitalism.
And almost for the entirety of that period, humans lived in abject poverty. The rise of capitalism perfectly correlates with the most spectacular increase in human flourishing and prosperity in the history of our species. Even in the last fifty years, liberalizing economies, private ownership, and contract law have lifted tens of millions out of poverty, mostly in SE Asia.