I think you are starting to get at postcapitalism, but are missing a few key concepts.

Capitalism is not use-value, or exchange-value, as you are presenting here. Capitalism is surplus-value creation. Capitalism works by creating wealth, not usable products and services.

Postcapitalism will come about when on-demand products and services will make use-value more important than surplus-value. In other words the economy will be based on things people actually use and need, and not one based on the accumulation of wealth. This is postcapitalism. Technology will make us efficient enough to have on-demand, use-value, products and services, thus eliminating the need for surplus-value.