I've been reading with curiosity the reactions to this thread, and I remembered something a friend of mine said after I'd disparaged these mega corporate food outlets (I think it was specifically macdonalds we were discussing). Consider this;
you're in an unknown land, say the arse end of siberia, and you're dying for a bite and a coffee, where you gonna go? who you gonna trust? Then you see the golden arches and I'd bet my bottom dollar that you're gonna go right there to feed your hunger pangs. Even tho' you wouldn't dare set foot in one of them back home. you know exactly what you're gonna get, and you know that it's a fair wager it'll be standard quality and therefore safe to eat/drink. besides, if it isn't you can sue the arse off them.
So, in some situations, these companies are useful to everyone.