Phones are relatively cheaper than computer and it's a basic commodity for communication. It's no surprise "if" there will come a time when blockchain tech is more on mobile rather than on pc. If in current situation only the rich can afford to mine major coins like btc and eth, and they (somehow) also get to decide for the chain? How will it be more centralized in the future? Blockchain advocacy is wider than just a financial asset or traffic in volumes coz it also comes with people authority more than a just a bunch of people with money. Always remember that people in the West can afford of the piece than people in the East in general. And that only create more gaps in access, utility and ownership.
With mobile-handiness and no control even from the early birds, there will be more freedom in the crypto space than there is today.