There is also one more scenario. The moment you have bulk of the bitcoin money in the hands of the 0.01% or even the 1%(Thanks to mining) people- The remainder 99.whatever% people can simply call it quits, refuse to trade in bitcoins and start their own currency. What will follow is obvious, the rich people and their whole enterprise can end up being worth 0.
To prevent it they will be forced to do call in the national armies, use lethal violence to force their currencies on people and keep order. Then establish central banks to control the supply of currency. Or in other words convert bitcoin to fiat money.
Mining has already created an incentive for people to in a way make money without any productive activity or trade, but through ledger keeping. It will be hard to convince people in the future to start skint poor in an economic system where there are 1% rich people who made all their money through non productive enterprise. And expect them to continue to suffer through it.
Finally the inevitable will happen.