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"It's going to be difficult to argue that users of generations' old kit should be compensated when things aren't so spiffy." - sure, but it's more about virtually forcing users into upgrade. At least Apple has limited itself (so far) to only wasting your network bandwidth and phone's storage space while MS really wanted to prove being a..h.. ever since release of Windows 10. My 4S had not seen any iOS past 5 until its slow demise (I've been hit;) and replacement with 6S. I'd curious what a 4S in decent shape with good old iOS5 fetch on the market (still a decent podcast player).