Cryptocurrencies are really a game changer and revolutionary. The true power of cryptocurrencies are not yet known by us and It will take couple of years to realize the full potential because as said in the post it wouldn't take another 9 or 10 years to fully develop techonology as it was in the case of "Internet". At that time there were no available resources and computing power available to realize the potential of a technology. In today's world we have lightfast supercomputers, it will only take an another couple of years to fully develop it.
Slowly people are coming to know the power cryptocurrencies gives to mankind. It is like socializing the money. No single controller. As people start harnessing its power, then slowly the demand will definitely increase and the prices will really sour. The mountain of prices that bitcoin has made recently today seeming very big today, but in some years it will appear very small.