Im not convinced. Apple has proven time and time again its not good in products requiring support from third parties. Look at Passbook, AirPrint, Firewire, Thunderbolt. Great ideas, but never the next big thing to conquer the market, mainly because of lack of support. Lets hope iBeacons and CarPlay dont join this list.
And yes, they also severely damaged their speaker market by switching from 30pins to lightning. Not exactly encouraging.
Also, dont forget Apple is a hardware company, so this initiative would purely exist to boost iOS sales. Again, not exactly the next Nest.