Capitalism will reach its end one day, long after we are gone, but that will be because of its own technologic achievements and not because of 19th-century socialist philosophy. Capitalism will become so efficient at some point that in its quest for more and more efficiency, it will end resource scarcity. Once scarcity is eliminated, capitalism "withers" away.
That's my hope anyway. In the short-term, I'd like to see free markets begin erasing more borders and reducing the number of nations. Hopefully, the recent nationalist fad is just that and we can get to more EU style setups, more globalism, and more cooperation. A disgusting amount of resources is spent on the military. Capitalism has the ability to solve our problems. Borders are in the way.
Edit: Is it the socialists, anarchists, or capitalists downvoting me? Hard to say. My ideas definitely don't have many friends.