I hear this argument being repeated a lot but I think it shows a lack of imagination to stay stuck on the idea that modern capitalism has to continue (at least for the super-rich). Capitalism is just a means to an end, that is to generate wealth. The wealthy's goal is abundance for themselves, and screw the rest.

The only reason they tolerate the proletariat is the need for labor to handle tasks that still require human beings. That’s what the modern capitalist machine does: it harvests labor. If they manage to eliminate the need for intellectual labor via AI and automate enough physical work using tech like Boston Dynamics and John Deeres, whoever's still around become trash. The reliance on this system of money flowing back and forth ends, because the only reason to maintain it is having people generate wealth for them. Once they can eliminate that "cost," they’ll do it without blinking.

We’re already seeing jobs being wiped out by the tens of thousands with the arrival of AI, and billionaires hoarding capital far beyond what they could ever consume, driven simply by the pleasure of having more than the next guy. We’ve also seen how some are depraved enough to treat human beings as mere resources for their own gratification. Why would them keep people around they don't need anymore? People are failable, expensive to keep and unreliable. If all can be automated, it will be. Expecting wealth distribution from them is also a fantasy. If they cared they would do it now, but the talk is always "when we reach certain goal the riches will tricke down, just wait."

The argument that "there won't be anyone left to buy products and keep capitalism running" might hold true during a transition phase, but that would just be like ripping off a Band-Aid. None of them super-rich will care about the money flow once this structure becomes obsolete and can be replaced by another system that’s more efficient and easier to control.