Could you expand on your position regarding the relative cost of developing a native vs. flash application? Is it simply constrained supply? The limited number

Could you expand on your position regarding the relative cost of developing a native vs. flash application? Is it simply constrained supply? The limited number of Objective-C developers, or that native development requires a higher skill level, thus constraining the number of suitable developers, or ...? (I'm not actually a firm believer in the above, I'm just throwing some brainstorming ideas out there -- I'm even ready to believe it costs less to produce a polished native app than trying to polish a webapp).