For whatever reason, Apple has opted not to allow Flash on the iPhone or iPad.
Here's why they will be able to make that stick:
- Apple's iPhone and iPad owners don't care about Flash - they care about being able to watch video on their device.
- The suppliers of video content don't care about the delivery technology - they care about being able to deliver their content to large groups of people.
- Apple users are important to video suppliers as visible, vocal, trend-setting consumers.
Yes, this analysis ignores other uses of Flash, e.g. casual games like Desktop Tower Defender. But most of the conversation around Flash has been its use as a standard method for video distribution on the Web.