I guess it all started when the first iPhone was released. Think back, what was the market like then for touch phones ? You would have to choose between fugly Windows 6 and clunky Symbian.
In that market, Apple was a breath of fresh air and people were more than willing to pay a premium for the Apple experience. However, things are changing rapidly in the current market. People are able to get
slightly less refined experiences at a
lot lesser than the iPhone. Apple, in its part, has tried to retain the premium price point (slight increase in case of the 4S - unjustified IMHO) by providing features similar to the competition. I mean, I am pretty sure Apple can no longer pull off a 3MP shooter in their latest iPhone models (whereas the competition was already at 5MP or 8MP), like they could in the past.
But I guess it is still not convincing for some users cause the competition is still priced lesser than the iPhone. Add to the fact, the competition is constantly improving (e.g., ICS). I get a feeling that Apple has its work cut out in the future....The same applies for their laptop/desktop lines too.