I'm not sure I'm as altruistic in wanting to teach as opposed to the xkcd 'someone is wrong on the internet' thing, but I should point out the Woolworths trademark dispute that I linked to is a grocery store (but perhaps I'm not parsing the meaning of your comment?).

The thing about trademark disputes by Apple with grocery stores, and Microsoft recently with the European company with the 'Metro' trademark dispute is because the 'post-pc' era isn't fundamentally 'technology gadgets', it's new storefronts and marketplaces.

Amazon and their Kindles are about strengthening their digital storefront/marketplace.

Apple's iPad is arguably the most successful new model storefront/marketplace. It's like the high-end mall of virtual marketplaces.

This is a very real contested battleground. It's not about the apps, it's about the retail storefronts, both physical and virtual.