The logic, and it’s a ruling class logic, seems to be that if the productivity gains are attributable mainly to automation, then the income gains should rightly and justly accrue to capital rather than labor. I see no way out of this trap without some kind of “social dividend.”

I don’t know whether or not that claim about the source of productivity gains is true. But if it is true, then my view is that the decoupling is the result of the artificial choke-points on production that political privilege has enabled capitalists to monopolize; that without those choke-points they wouldn’t be able to extract the rents they extract, and the way out of the trap is a combination of (1) the elimination of those political privileges and the resulting monopolies; and (2) co-operative worker ownership of the means of production.