i am not sure about the maximum amount btc in future but it could be happen if there is any increase of people which using bitcoin although in the reality, there will be any fluctuation in the price. i think $10,000 in 36 months is not the final ceiling and i think we need more time. no one will know the maximum targeted price as the price is from the people wants in the market, but if more people wants to use bitcoin then there is a chance for bitcoin can increase in up to $2,000 in short time.