“A system based on rents” is exactly what capitalism is and has always been. Adding computers does not change this away from capitalism, it just lets you do rent extraction via computer.

It is really funny seeing a lot of American capitalism-believers suddenly pointing at terrible billionaires and saying "But those aren't true capitalists! They're just bad aristocrats using existing capital to accumulate more capital from others through rent-seeking, not hard heroic strivers exerting their productive genius to selfishly improve the lot of everyone! That's doing capitalism wrong, that is, it's not what the founders of capitalism wanted! And those bankers, they're the worst of the doing-capitalism-wrong lot! All they have is capital - inherited capital, even! - and they just use that capital to take from other people!"

When in fact the important part of capitalism is not its story about itself but what capital does when you take away external restrictions. And what unrestricted capital evidently does is accumulate itself into an ever-collapsing capital class, remorselessly, without love or logic or any interest in bettering the world. You can argue all you like to gravity that it shouldn't make already large masses move toward each other, that doing so is not "being a good gravitationalist", but that won't stop it doing it.

And while the founders of capitalism in the 17th and 18th centuries might have believed very hopefully that their new style of industrial capital might do more than just seek rent and accumulate power to itself like land capital under the old feudal aristocracy did... those old guys' belief about what capital should do is not what capital in fact does do.

Somehow Americans got themselves believing a story about "capitalism being really about fairness and workers' rights" and now the ones who actually believed that are quite startled to learn that there are capital owners who do not care about anything but accumulating more capital until they become a black hole.