Jason Kincaid hits several nails on the head over at Techcrunch:
The App Store isn’t a storefront in the way that Amazon.com or Walmart are — this isn’t just an extravagant affiliate fee. We’re talking about the primary method of app distribution for one of the most important computer operating systems, ever. iOS is still in its infancy, and is going to continue to permeate across Apple products: desktop PCs, laptops, televisions, and whatever else Cupertino cooks up. And as people grow up in households where iOS is computing, it’s going to become harder than ever to get them to switch to less restrictive platforms down the road. Even when, heaven forbid, Apple starts making products that simply aren’t as good as the competition, or publishers and developers try to move to a different platform.
-Techcrunch, Feb. 16, 2011