I saw recently that there is speculation that Apple is going to go into competition with PayPal by producing their own multi-purpose payment system. This would allow the iTunes and App store payment system to be applied to a wider range of participating products across the web. I'm not sure why this seems to have been greeted with shock and surprise by the industry. It is after all a logical move to further improve the return on investment they have made, and hints at a future where the enabling...