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.
I agree to you that bitcoin might reach such a huge price in future. Bitcoin is the future currency. Before we only use fiat because we do not have technology but now that the worls become more of technology and in future become the technology itself. There is no need to use fiat. We will use currency in technology and that is bitcoin.
The only problem for me is that i do not have enough bitcoin that can sure, i'm one of the richest people. So i am working hard. For this future.