Mostly it forces obsolesce; I can see Apple`s aspect not needing to dedicating resources to keep an ever diminishing base of ageing hardware up to date with OS updates. It would also force Apple to be more like Microsoft needing to be more mindful of hardware limitations, optimising OS X accordingly, with the current 12 month cycle already putting Apple under strain to deliver.
This all equally frustrates the end user ever more given the diminishing returns technology advancements, where new hardware may not bring any tangible benefit outside the aesthetic. Personally I only expect 24 months, of use from portables then I swap out the system, desktops being more long living due to their nature (not Apple), equally my hardware is monetised paying for itself rapidly.
Sadly Apple these days solely serves Apple (APPL) with the customer coming a poor second, with the gates of the "walled garden" closing evermore, as once the customer is fully embedded into Apple`s ecosystem it`s becomes far harder for them to make a change to anything different. In many respects Apple is building a monopoly, nor is it a bad system for many, equally one that is not capable of serving all, and after all Apple has to make a $...
Q-6
