If bitcoin still survived and price are still increasing probably all members of bitcoin community become millionaire. How wonderful it is? This is great opportunity for us, and we should not waste this moment because I believe there is something great to happen in the future more than of what we have expected.
The Bitcoin total supply is very limited, and if the number of millionaires in the world is higher than the number of Bitcoins available, as they say, I would not be surprised if a single Bitcoin becomes worth more than a million dollars. But I think it will take more than 5 years for this to happen.