I've heard this argument before, and if it's true, it's suicidal. Apple will have failed to learn a critical lesson from Microsoft's dominance of the early PC era: it's the apps that matter. Even once there was a significant potential market of would-be platform "switchers" who wanted something beyond what Windows was offering, these switchers remained on Windows because the critical apps in their day-to-day usage (be that Office, CAD software, or whatever) only ran on Windows.

If Apple's view is truly so narrow that they kill the ability of their "complements" to make good money, then Apple is pushing hard to kill the goose that lays the golden eggs. Even if Apple had unquestionably the very best manufacturing processes, hardware design, and platform software design, it would all be worthless if no one other than Apple can afford to write and support high-quality software for that platform.

Now, I'll agree that from Apple's publicly observable positions with its App Stores that they (incredibly) don't seem to understand the need and necessity for maintaining a virtuous cycle between developers and their platforms.

A wild-a-guess: This may stem from a deep misunderstanding of the nature of software. Sure, a random tapping game or timer app or whatever is essentially a replaceable one-off, a fungible commodity. But software that's a fungible commodity fundamentally doesn't create any platform stickyness. If it's really so easy to recreate, it can and will trivially show up on a new platform. This is especially true in a world where many software organizations really are getting better at delivering on multiple platforms.

Beyond the fungible stuff, there's the important category of software that I increasingly view as a "living" thing rather than a static artifact. Such software requires ongoing maintenance and care. This allows it a lifespan across the changes of its underlying platform(s), and to absorb and embody deep problem domains. I pose that these apps, no matter the genre (games, "creative", technical, etc.) are the ones that can create platform stickyness. This, in turn, implies that humans must be able to make a living supporting that software. Undermining this is like cutting off the "oxygen" to a vital part of a platform's ecosystem.