Crypto in the longrun could create a world where people could instantly, anonymously, and freely exchange currency with one another. Imagine how liberating that would be for the world as a whole. Companies deciding to outsource various jobs to India really helped revolutionize their economy. The internet along with cryptocurrencies would take this corporate level development down to the individual. Think about mutually beneficial exchanges like tutoring. You want to hire a mathematics tutor for somebody. Somebody in e.g. the Philippines who has excellent English and Math skills wants to sell their service as a tutor at a rate that would be extremely desirable relative to western incomes but also extremely desirable relative to his locale's average incomes. Right now even if these people are able to connect, working out how to actually pay each other is very awkward.
Cryptos could remove all barriers to entry for inter-personal financial exchange. This is something we take for granted, without realizing how much such barriers are really holding us all back. Or maybe we do realize it, but imagine these are necessary obstacles. Think of the, what now probably numbers in the dozens of, different payment platforms people jump through just to try to be able to give their money to people who they want to give it to (and all the new tertiary problems those said platforms then introduce into the process). It's really quite remarkably how backwards our global financial capabilities truly are.