Humorous given that Apple has several very prominent apps (iTunes, Final Cut Pro) that still have made the migration. And they control both sides!

However that is irrelevant. Tell me again how, if Apple revises the API, that suddenly every app available will instantly morph to accommodate it? Of course that is completely and utterly asinine. It's a ridiculous argument that I can't believe knowledgeable people have, desperately trying to reach some sort of rationalization of Apple's actions.

Also, applications written for cross-platform development tools are higher-level and for complying with any new interfaces you may have it's just a matter of rewriting some bindings. In case the change is so radical that it needs architectural changes (like from Carbon to Cocoa), you can always force tool vendors to update their platforms by pulling out Carbon completely (how could they do that if some of their own apps are still on Carbon?)

In fact I would bet that applications on stuff like MonoTouch would've gotten upgraded from Carbon to Cocoa a lot faster than native apps were.

Really, you're setting up a strawman argument.