Apple has tapped into the fundamental decadence of our society. We just want whatever is new, will mortgage our homes ( if we can ) or sell off our first born just to get that quarterly FIX because we are not addicted to productivity, functionality or even that much to usability . We have to feed the addiction and the only cure is an incremental upgrade. Apple knows this and so do we all, but we cover by proclaiming every upgrade is a significant enough upgrade to warrant tossing last years toy in exchange for a shinny new one. It hearkens to the immaturity of the latest generation of Mac users who use their Smart phones, not to nail down jobs or positively change the world, but rather to play games!
As a diehard mid-to late stream adopter, I muse over these incremental upgrades decade after decade.
Apple are clever, they send out the incremental and make as much or more money than if they waited to release the REAL upgrades.
Enjoy your fixes