hmm, I imagine the then 2 prevalent systems of neoliberal capitalism and soviet-style "communism" to be a pretty terrible combination actually. Although I believe I get what he was trying to say about individual rights within an economy of the commons(or at least thats how I interpret it).
Smaller groups of humans (villages, households, ...?) could decide among themselves whether they prefer to live together by capitalist or communist principles. These smaller groups could function within a larger federation - a bit like the fediverse with its smaller instances where each can decide their own internal rules.
yeah, thats probably a really unstable combination, as the internal logic of capitalism requires infinite growth, so the capitalist parts will be strongly incentivised to expand into and consume the communist parts.
But maybe different kinds of socialist communities could federate like this?