Faster transfers are possible. Some companies (Kabbage maybe?) are able to do same day or instant transfers without wiring.

I believe it's done by opening bank accounts at major banks, and then using the interbank transfer system which is instantaneous and only requires an account number and a name. Other services offer pushes to credit cards or debit cards using bill pay systems or blind credits.

It isn't actually that hard to move money from person to person. The real issues with this sort of stuff are: a) payments fraud b) money transmission law and regulatory compliance