If so , suggesting the world economy will be maybe 80 trillion in 5 years , (68 trillion at present ) at 1.2 million bitcoin will be 20* current mkt capitalisation , just over a trillion at present , therefore bitcoin will be responsible for a quarter of world economy, but if alternative coins stay in roughly similar proportion crypto coins will account for nearly half of world economy . I find that unlikely , and I suspect alternative coins will make up a greater proportion in the future ( one reason being the above reasons limiting the upside to owning bitcoin , we won't see the meteoric rise in bitcoin we've already seen , but may see some sort of meteoric rise in some newer coin that has a far smaller capitalisation. Whichever way you look at it most of bitcoins percentage gain is far behind it, atleast for the next few decades.[/QUOTE]