I don't really recognize myself as a "capitalist" so you're barking at the wrong tree here. I'm looking at a future beyond crude capitalism as we know it. A future where we, hopefully, aspire to compete with one another over matters more meaningful than merely "capital".
Nonetheless, with the capitalist system, we have a system in place which can be developed into something. A society which encourages innovation, competitive drive and individualism, where individuals have incentive to better themselves, rather than to rest on their laurels, and collect checks that better men than themselves have earned, and shared with them, out of pity, or compassion, or, in most cases, due to law enforcement.
A society that is built upon capitalist foundations, is going to find itself developing much, much further, in the coming centuries. A society that is built upon satisfying people's "base needs" and imposing equality, is going absolutely nowhere. We have already seen this, I do not see any reason why we should see it again. Marx's ideas were influenced by his own personal short-comings, as a man, as a father, as a provider, an utter failure of a man in most regards, and he created a "fantasy" ideal, an "escape" from our world's often harsh realities, knowing it would appeal to many of his kind. But even he knew that it was nothing more than fantasy, a construct created by a clever man, to satisfy his psychological need for an alternative reality.
Rather than reviving the dead ideal of a man who himself came to despise it and its followers, what we ought to be concerned with, is how to build upon the capitalist model in a way which allows fair and just competition all across the board, without discrimination and obstacles. Instead of destroying the effective (but incomplete) model and replacing it with the perhaps emotionally comforting, but physically crippling fantasy land of "communism", we should seek to enhance what we already have, which has clearly functioned in our behalf, as we can attest to at this very moment, sitting on our computers, or smart phones in hand, for some. Communist experiments and their required mass production, are only enabled by capitalist innovations somewhere else. By itself, the model cannot continue to be sustained. Communism can only work "hand-in-hand" with a capitalist society, offering its workers as cheap productive labour for capitalist innovators, like China.
