Chart from 2014, when Bitcoin was $300, predicted price of $10k for today Nov 22nd, 2017.
We're at $8,200. (If we add Bitcoin Cash and Gold prices, we'll get close to $10k).
Next milestone on chart: $100k in summer 2021. And next: $1M in 2027.

I think it will be difficult for bitcoin to have a value of $1 million despite the next 10 years. There are so many investment choices in crypto, and it is very unlikely that all choices are aimed at bitcoin, there are still altcoins which are alternative choices for investment.