Future of Bitcoin Economics depends on mass adoption of Bitcoin. No body can predict accurately the true future of Bitcoin.
Sometimes, people forget that Bitcoin is a mechanism that allows P2P use .... aand also, more importantly, M2M (maching to machine) use.
Bitcoin is far better suited for use by machines than human beings, and the major difference here is that a machine doesn't have the ability to 'choose' whether or not to 'adopt' Bitcoin. In most cases a machine that engages in M2M Bitcoin transactions is part of this new iOT economy.
For every 1 person on earth, there are 4 devices (machines) with the capability to engage in M2M transactions. There are 7 Billion people on earth, this means that we are talking 28 BILLION devices here.
A new economy is being constructed right under our noses, and it will be a far more prosperous one than our current system.