Very interesting concept. There are already some gaming companies out there that are basing their economy on cryptocurrencies. Most have some form of trading shop where prices freely fluctuate. In fact, there are some cryptos out there that are MADE with that specific goal in mind. But whats more interesting is that as more and more people demand control and profit from their generated data, this view will become commonplace. For this its essential to have crypto currencies with no transfer fees like steem. Think about it: Distributed Capitalism is the first step. Then maybe as second step we could turn our whole economy into a meritocracy.
Also in my opinion your view IS optimistic because there will be downsides to that as well and we are not seeing them yet, but its not utopian, its totally possible. However it may take years for us to see it.
hah, many many moons ago I used to play an MMO called 'Eve online' - basically internet spaceships. The amount of RMT (Real money trading) ie. harvesting/farming ingame currency and selling to other players for real cash (forbidden by game developers) was endemic, so it may as well been using cryptos :)
In fact there was another sci-fi mmorpg called something like entropia online where game rules did allow you to lodge money into game to be converted to something called PEDs , and re-converted to real money for withdrawl. Not sure if that game is still running anymore though.