The lack of a fallback does seem to be the biggest issue. On the iPhone, it doesn't really matter, since none of the flash-based UIs would be usable on it anyways, so a separate version would still need to be developed. The iPad can afford somewhat PC-like interaction, so sites like Hulu could work if there was a flash plugin.<p>What reassures me that Flash is on it's way down is the way web technologies have advanced and been adopted despite IE's dominance and Microsoft's reluctance to properly implement CSS and other newer web features. When Firefox hit the scene, IE was far more dominant than Flash is now, and yet it managed to fight its way into the mainstream. Web sites are now written to follow the standards everywhere that it's convenient, and CSS and JS hacks are used to make it work in IE.<p>Sure, iPad users won't be as forgiving of broken sites as Firefox early adopters were, but their collective voice will be far more influential than the small band of rebels that broke the IE monopoly.