The problem still remains that "over-abundance" will only apply to labor. It won't apply to capacity nor to raw resources. We'll have lots of humans with not enough to do, whereas Marxism remains a "classical" economic system which still thinks in terms of scarcity of labor.
I don't think the future is Communist, but neither do I think it is strictly capitalist. I think we're still going to have a fundamentally consumer society, still at its core free market, it's just that labor will no longer be an issue. It will mean adjusting precisely how it is that society as a whole profits from the means of production. And remember that Marxism was always more than merely an economic theory, but was fundamentally a socio-political theory. It was innovative in that it viewed economics as the very core, but it proposed a good deal more than simply "From each according to his ability, to each according to his needs", and involved revolution, dictatorship and what really does amount to a sort of single party state (because, after all, who needs more than one political movement when Marxism is perfect).
In the end, I expect we'll probably see a shift towards capital gains taxes, higher resource rents, transactional taxes (ie. taxes on the purchase or sale of bonds and shares) and other such mechanisms, and while lots of corporate interests will kick up a mighty storm, but there's little choice in the matter. At some point, robots will do a great deal of the work.