So talk me through that. Whilst bitcoin is not spendable prevalently in the Phillipines there needs to be a third party for the son to change his bitcoins in to Philippine Pesos. A third party that wants to make some sort of profit and also a third party that is exposed, for a certain amount of time to the volatility of the value of bitcoin.

There's also the predicament of the nurse needing to convert here GBP in to bitcoins initially. Again this presumably requires a third party wanting to make a profit and that is exposed to risk. I know in the UK that you can buy pretty much instantly from a market place but you are looking at 4%+ for your purchase. Purchasing £100 from an exchange would probably be more expensive due to bank fees and exchange rates and would require a wait of 2-5 working days.

I am failing to see how bitcoin can compete with WU. Even if bitcoin was spendable prevalently in the Phillipines, the purchasing cost in the first place is more expensive than WU.