There are a lot of places where the government is not strong enough to maintain a reliable currency on its own. The USA was the global currency up till now because it was universally trusted, but that's changing. The people who have profited from the international dollar are maneuvering to keep their monopoly.
Btc isn't just crypto, its the block chain too. So not only can you pay/collect, but it's publicly available and things like smart contracts are easily possible in an open environment.
So we can do things like say: send x btc to y address if weather.com reports it's 50 degrees in Des Moines on May 8th at 9am, or whatever, all sorts of settlement problems are solved with no middleman who can stop it.
The reasons they don't service it are regulatory, not technological, and so an unregulatable Option will eat their lunch.