"Hoarding" or controlling resources will be always meaningful. There is limited amount of accessible matter, and even if all basic needs of every human is satisfied, people have inspirations to do things, including BIG things, and for that they need resources. The only way we might have something like communist society is if AI takes control, and no human is controlling anything of a value. Kind of like a "Culture" series of books by M. Banks. Or if we go completely virtual, but even then, the computation resource is of the value...