Oh, I hadn't noticed any changes. I guess I'm part of a different "in crowd". I stopped using Apple's music app years ago when they decided I needed to relearn their app on every update. I am simply too busy to have to re-learn a friggin music app on every release. Today I use pandora, actual CDs and (gasp!) the radio, actually transmitted via Frequency Modulation over the EM spectrum. I have a special device for this. It's kind of an antique in today's world but, amazingly, it still works. It's called a "clock radio". Yeah, that's how I fight tyranny. It's a little inconvenient, but far, far better than the frustration and demeaning I get from a stupid app that's advertised to make my life better but only makes me feel incompetent.
This is the failure in your thesis. It ignores competition and innovation. Obscurity is an obstacle for the consumer that a competitor (in a free market anyway) will exploit. But apple's app store is not quite a free market. Neither is the smart-phone market if you're not a big enough player.
While we're at it, HEY APPLE, WHAT THE FUCK WAS WRONG WITH "SAVE" AND "SAVE AS" ???? WHAT THE FUCK IS "SAVE A VERSION" SUPPOSED TO MEAN WHEN I CAN'T SPECIFY A SEPARATE NAME OR PLACE FOR MY "VERSION" ???? This change alone, this minor loss of control over my filesystem was enough to make me download and install Linux (Mint) and try it out. Unfortunately, Linux is still too "hobby" for serious work in my office. We need a viable alternative.
Hey, all you tech folks, quit yer complainin' and make a better widget. Reverse engineer apple's music database and make a new interface to play it. Advertise it here. If it's good, we'll all download it for a dollar, or less (see my point?)
When the giants become too powerful and start forcing the little people to grovel, the little people have a duty to chop down the giants at their ankles and bring them down.
Also, In 1900 every car manufacturer had a different way to drive their cars. Some used a throttle on the dash instead of a foot pedal, some had different gear shift patterns, etc... Buy a different car and you had to learn to drive all over again. Today, aside from the location of the wipers and cruise control, all cars work pretty much the same. Why? Because the consumers demanded it.
Usability. Demand it or create it. Fuck the goddamn secret handshake society.