Yes! I was just thinking: One hundred person-to-person payment services aren't enough... we need 101! Seriously though, Apple has a terrible time creating online services ( http://www.zdnet.com/article/apple-and-the-cloud-a-magnifice... ) and there is no way another entry in the "Proprietary, heavily policed, middle-man-encumbered social payment tool" is going to go anywhere.
* hundreds of millions of NFC-enabled, Touch ID-capable devices
* the platform vendor advantage: it would come pre-installed on new devices and in a future iOS update
* users already transact billions of dollars through Apple services: Apple Pay, iTunes and the App Store
* unlike many banks and retailers, Apple Pay hasn't been hacked
Not only could Apple create a Venmo or PayPal-like service using ACH, it would do something with in-person payments further down the line thanks to NFC and Touch ID.
Just as we've seen a large drop in the use of Google Maps on iOS once Apple Maps was good enough and came pre-installed, the same would happen with Venmo, PayPal, Square Cash and the rest, especially for those folks who've never used any of those services and are getting their first smartphone or dipping their toe into app-mediated payments for the first time.
Some people have speculated about Apple doing some kind of cryptocurrency (Dell and Microsoft accept bitcoin, for example), what they really need is real-time, multi-currency transactions, with the ability to create their own currency or token if they wanted to and that's Ripple: https://ripple.com/blog/a-new-chapter-for-ripple/. Ripple would enable Apple to do its favorite thing: cut out the middle man. And of course, Ripple would allow users to transact in whatever cryptocurrency they wanted to in addition to fiat currencies.