Capitalism doesn't need to be about accumulating profits. It can be about making profit that then goes back into the business enterprise to further it (of course there's going to be a desire for some accumulation of profit to serve as security for the enterprise). That furthering of the enterprise is itself a move toward a form of growth though, at least at the micro level.
I think that even if Economy stops growing significantly in the developed world, I don't see it really as a terrible thing and I don't believe that profits will end even with low growth economies. Dual Realities are supposed to happen soon in the Devoloped World, some sectors such as the high tech world would keep being highly profitable and dynamic, while traditional industries will totally disapear in the rich countries!
