The future price of bitcoin is quite hard to determined because we are not sure if bitcoin will exist forever. But, there will be a time in the future that the price of bitcoin will become totally expensive and maybe all the people will use cryptocurrencies which may lead to increases of demand.
Exactly, it's very hard to predict the future of Bitcoin as every day there is a surprise as well as shock. Yes like you said it will become very expensive in few years also crypto will rule the entire world, crypto currency is spreading like social media for sure there might be a high demand.