I can't fathom it, I just can't. I owned a pocket PC YEARS before any iPhone was invented. It had touch screen, a stylus, easily customisable themes, mp3 players, video, games (retro, touchscreen based, casual, rts, a variety really) and a bunch of things. At the time it retailed around the price the iPhone sells for now, and this was years prior to the iPhone's release.
I still struggle to comprehend how Apple managed sell a product that has existed for years as new and charge a hell of a lot for it and have so many people buy it! It was the same thing with the iPods! Why do people make these massive purchases without looking for a shred of information!?
It's evil. ;_; I suppose it's influential in the sense that it has made a really strong propaganda campaign. (I won't make the comparison, but I'm thinking it. D: )
Stupid marketing departments.
Edit: I think the general defensiveness a lot of gamers (Extra credits be damned, it's a handy word for the purpose of discussion.) when it comes to Apple is less that they're anti casual gaming and more that they (me included) feel like the casual gaming trend is artificially being used to try and redefine gaming in general and I don't think that's quite accurate. It is surely a new (well, old really, but for the sake of argument let's pretend it's new) type of gaming but it's something that happens alongside other types of gaming more than it directly reshapes the more conventional games we play. (Halo, Final Fantasy, SoulCaliber, y'know, the usual)