Comment by skeledrew

> between the people that already own things

Even then there still won't be capital per se, as that system is rooted in humans' economically valuable labour. There can always be bartering of course, but it'd be pretty meaningless as all the "owners" will be able to create their own X, where X is a jet, yacht, or anything else that one with the access to the means of production (AI+robots) desires.

As to those without access, they'll just die out; there will be no fending at all unless one is given or takes access.