"Capitalism" has probably never existed, except in the minds of Karl Marx and his adherents. Capital, on the other hand, will be around in some way, shape, or form as long as we don't to return to barter. Capital is simply the use of tokens to represent value. More and more, of course, we are doing value transactions electronically. The people who should be worried about this are thieves. Increasingly, the will be less and less cash in anybody's wallet.