I guess we have to agree to disagree about how smartphones and specifically the iPhone have advanced over the last 6 years. I think the market disagrees with you fundamentally, and not because of any Jedi Mind tricks, Reality Distortion Field or marketing. Today's mobile devices are far better than what was available 6 years ago. The changes may not fit your needs/desires, but again, the market disagrees.
The changes you cavalierly dismiss are important; people want lighter, more powerful mobile devices. They don't care about your desktops. You also throw in a huge amount of judgement about how people use mobile devices, while ignoring the good use cases. Mobile is no different than any other technology, it can be used for good or abused.
An in-vehicle nav system is horrible; the displays are terrible, the maps rarely updated, and if updates are available, expensive.
The reason people don't upgrade their desktops as frequently is because desktops are a mature field.
And I think you're way off base in dismissing sales via mobile devices; perhaps your ad campaigns fail because your customers aren't on mobile? This article is a bit out of date, but 70% of Amazon's holiday sales were done through mobile devices. [1]
And your last paragraph is telling. You don't "own" your customers. The App Store has huge flaws, but in no business do you "own" your customers. Try selling merchandise on Amazon, or via Walmart. See how much you "own" them there. See how the business relationship is tilted towards those creating the storefront. Apple isn't much different. Doesn't mean that they shouldn't improve, but when Walmart tells Vlasic to create a $1 gallon sized jar of pickles, Vlasic jumps. If you don't want to update your apps (you didn't say what Apple expected), then that's tough luck for you.
1.http://time.com/4162188/amazon-holiday-shopping-statistics-2...