Good question. I suppose you'd want to dig around dead technologies... perhaps someone had a monopoly in the wooden wagon spoke business or something like that, that simply ceased to matter as an industry.
There were a few other options, as I recall. A service called Payoneer, some others.
It used to be W.U. exclusively, but that's changed in the last ten years.
Sure, but that's not the group of people I was talking about, who generally go into a physical office, cash in hand, and want to send it somewhere else where someone can go pick up cash. WU isn't a complete monopoly in terms of sending money, obviously, but they still have a big chunk of the market. Actual facts would help the conversation, though:-)