This is a great question but one that is hard to answer without context. For example, here in the United States, I believe one of the most important industries that needs flipped is healthcare, specifically the standardizing the cost of identical medical procedures from one city to the next and affordable medications.

However, in underdeveloped countries, there needs to be a better answer for the largely unbanked masses. I'm not saying more banks are the answer, but a way for them to easy store and access said money, whether it is a digital coin, through SMS messaging or some yet undeveloped technology.