This article: http://feeds.arstechnica.com/~r/arstechnica/index/~3/y-PHmbhiMPQ/apple-takes-aim-at-adobe-or-android.ars
... sums up Apple's position nicely, and it's from a reputable, non-partisan source (Ars Technica).
It seems that, once again, Apple's self-belief is straying into hubris. It's one thing to have great products, but to guard them so jealously smacks of last-century fast buckaneering, rather than 21st century sustainable business. As a company that has benefited significantly from open systems, their current closed approach seems disingenuous at best and cynical at worst.