[jacquesm]

This comment is dead on, but there is one tiny footnote that I'd like to add.

There have been some less than scrupulous operators of payment systems in the past which have made it much harder for bona-fide operators to get started or to become even moderately successful. The fact that any such service instantly attracts a bunch of money launderers also does not help (that's not fraud from your perspective, but it is illegal and you are instrumental in making it work).