Let discuss my Nigerian people about the future of Bitcoin because there are people who are still skeptical about Bitcoin because there are still those who considers Bitcoin as an experiment work that is still in progress despite all the progress that Bitcoin has been able to record.
Let those who doubt bitcoin continue to doubt. People doubted when it was just 10 cents and now you still talk of people who doubt when it's already a $100k? What I actually see in most of them isn't actually doubt rather it's the fear and discouragement that bitcoin has already gone too far to invest in.
As for your questions, the mass adoption you see is the aftermath of what people have experienced in price movement over the years. Those who have the proper knowledge about investments and how ROI works already have seen the potential of bitcoin in the future.