In other words, Bitcoin might grow very fast over next several years and become unified with the mainstream economy. Yet there would be this smaller thing growing faster that eventually overtakes the mainstream economy by 2032.
I am becoming more and more convinced of this
bifurcated future.
I also think a bifurcated future is likely.
One currency for the physical economy (government coin) that is not anonymous (pseudo-anonymity the government can easily breach will be tolerated).
Another currency for the knowledge economy (crypto coin) anonymous and untraceable.
There is likely only to be one big winner in each category. Both of these winners look poised to do incredibly well. Remember to keep you records in order if you invest in the bank coin. The taxman will be along shortly to take his huge chunk.
My question for any developer of an altcoin (especially one with new and innovative features like anonymity) is why not try to capture both markets? Why not release a government coin version and a crypto coin version. Just because bitcoin is first does not guarantee it status as the official bank coin of the future.
Selfish people deserve the corporate top-down controlled fully compliant government's coin. 
I imaging we will all need some government coin.
Government coin may be the better short term play. Crypto coin the superior long term investment.