Bitcoin is designed to be more scarce every single day while the population is almost required to increase its demand. Why? Because people will have to sell their failed fiduciary currencies per Bitcoin. The current financial system failed already and people will realize that Bitcoin is the only system to reset everything. Governments will try to create their centralized cryptocurrencies that will fail like the fiat due to hacks and the fact that people will prefer to use Bitcoin. Bitcoin is a blackhole that is swallowing every single fiat bill. 10 million dollars per coin is probably too conservative. People who dont own Bitcoin now will have to own in it later. Those who are acummulating BTC right now will be the richest people in the world. Bitcoin should hit that price in the next 10 years and there is nothing that could stop it.
Considering the entire nature of Bitcoin and its ecosystem, there are huge possibilities that the market value of Bitcoin might be worth thousands of dollars but I don't really see it becoming worth millions. In as much that there is a specific total amount of Bitcoin to be in total circulation, that can't be an indication to conclude that 1 bitcoin might be worth 10 million dollars in some time to come. Even if Bitcoin is worldwide adapted into the main stream financial ecosystem, its market value will not be up to millions.
I also think that way, and if that is the case then I will look for other coin references because the high price makes me more careful because a small amount of bitcoin is definitely valuable. but I'm not entirely sure the price will be in the millions of dollars.