The problem still remains that "over-abundance" will only apply to labor. It won't apply to capacity nor to raw resources.
When robots make robots, it applies to capacity. And we already have a super-abundance of resources. Just yesterday Slashdot ran the story about Apple requiring recyclers to literally shred iPhones. If that's not resource abundance, I don't know what is.
The only thing the Earth does not necessarily have is a super-abundance of real estate. There is definitely an upper limit there as to how much space a person can exclusively occupy. But if you've ever been in Montana, you'd know that we're a long long way from hitting that particular limit.
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).
Not really. It's an economic system. One proposed path to get there was revolution, dictatorship-by-committee, and a single party state. That path obviously failed. There is another path, and we in the West are already on it, despite the efforts of Thatcherites to dismantle it.
Still, this persistent urge to conflate economic systems with political systems really needs to stop. It is possible to have a communist representative democracy, a communist dictatorship, a communist theocracy, or a communist anarchy, just as it's possible to have a capitalist representative democracy, a capitalist dictatorship, a capitalist theocracy, or a capitalist anarchy. They're different words for a reason. The fact that the handful of (premature) attempts at communism were associated with violent revolution and dictatorship is an accident of history, not an absolute requirement.
In the face of actual super-abundance, there is no allocation committee. That position of power doesn't exist. When raw materials are acquired, transported, and refined by autonomous machines, when components are fabricated and transported by autonomous machines, when products are assembled and transported by autonomous machines, you can have whatever you want (and have room for), and there isn't anyone deciding whether or not you should be allowed to have it.
If we tried to just establish such a system today, of course it would fail. None of the prerequisites apply. The autonomous machines don't exist. Yet. They're getting closer every year. Mines in Australia already use autonomous dump trucks. And if it happens too quickly, yes, there will be examples of pathological behavior. But when it has happened, so gradually that people barely noticed, the vast majority of the world will only order one toaster from Freemazon.