The problem with capitalism is that it only exists thanks to other people's labour.

Spoiler alert:

ALL the money capitalists hoard is "other people's money." It literally belongs to the state that created it. Bill Gates "owns" as much money as I do - nada. None of the money he hoards belongs to him. It's not "his" money - it never was.

The hoarding of "other people's money" is literally what makes liberal oligarchy possible - without it, the capitalist mode of production becomes impossible.

I thought that was the problem with automating everything aka no need for workers means no one has money to buy anything which means there's no capital to produce anything.