"Stealing" features is one thing, taking advantage of your control over a particular market to shut out the "competition" you "stole" said features from isn't justifiable in any way (IMHO).
When either company leverages its control over the market to exclude its competitors using mechanisms other than technical quality, that's a bad thing and needs to be condemned.
I view mobile as more of a game console than a PC, but if Apple wants to insist that they're fully functional and "post-PC", they have to live by the same standards.
Apple does not insist the post-PC devices are fully functional. In fact, Jobs compared PCs to trucks and iOS devices to cars. By post-PC they imply that lockdown that comes with it.
Now, I also think this is a dick move, but it's because of dick moves like this that the patent and copyright systems exist in the first place, and why I think they need to be reformed rather than abandoned.