If you already have your mind set on what you want to believe that is your thing.

I see a future where cryptocurrencies are used for all kinds of things, can be traded on p2p exchanges (a working algorithm for exchanging different cryptocurrencies that are based on blochchains exists)
and there are different coins for different usage scenarios.
An MMO could base its ingame currency on a cryptocurrency and in that community it makes sense to use it. Why would you want or need bitcoin for this, especially if you can easily exchange one for the other on exchanges.

But you go on believing that bitcoin will reach world dominance.
I simply find it a very narrow vision of the future