I read an interesting post reporting on a debate between developing mobile Web Apps vs going Native. This has been a hot topic at work lately, and I'm a big advocate of doing what fits best. I like to keep my options open, and not be forced into a corner. So in many instances, I come down on the side of cross-platform HTML5 WebKit apps.
Whereas some applications are definitely best implemented as native, (arcade style games come to mind as obvious), many business & productivity applications are content driven, and must be connected. Sure we need a slick user experience - and Apple devices have certainly raised the bar in this respect. But in many cases the emphasis from a development point of view should be on cross-platform capability, not device-specific slickness. The quandry is, that this is not really in the best interests of the device manufacturer who has so much more to make than the price of the device if they can just lock you in to their platform.
That said, you can have the best of both worlds with tools & frameworks like WebKit, jQuery Mobile and PhoneGap. WebKit transitions are as good as native, jQuery Mobile promises to give a consistent & performant cross-platform experience (just give it a few more months) and PhoneGap gives you the choice to wrap it all up in a native shell and enhance only the parts of a WebApp that need to be native without having to go completely down the one-way dead-end street of single platform implementation.
Objective-C and Cocoa Touch taught us a lot about how to do mobile right, but now it's time to leave the Apple University and realize that the real world does not revolve solely around Apple.