The answer would probably have something to do with a shift in incentive frameworks. As it is right now, within our hegemonic social structures, we find it hard to conceive of any forms of existence whereby the individual does not measure the cost and benefit of work from a primarily selfish angle. But socials structures in which this happened have, I believe, existed historically, particularly in communal societies. Therefore, it's clearly not impossible. But let's turn the question around. Would a capitalist society be able to function in conditions of overflowing material abundance (achieved, for example, through technological breakthroughs in efficiently synthesising material goods from molecular building blocks)? Given that scarcity has been such a focal point in the organisation of capitalist societies, I cannot imagine how they could remain as they are when you take scarcity out of the picture completely. What would be the incentive to work then?