And of course we've all mentioned here numerous times that a web site should not rely on a single technology
I question the basic wisdom of that assertion.
(naturally, I assume it excludes websites that rely on pure HTML.)
I understand the thinking behind it, but IMO, it's little more than an old-school traditionalist axiom, similar to targeting 640x480 displays, 56k modems and "websafe" color.
Advancements and changes to internet paradigms do not come from Apple, or Adobe, or Microsoft; they come from the web developer community
choosing to raise or change the standards in their projects.
ie: if every web developer decided tomorrow that true HD resolution and Flash 9 would be required to optimally view their websites, the audience would simply adopt those standards, in much the same way that DVD replaced VHS, and CDROM replaced the LP.
HTML is dino-tech.
BTW, IMO, Adobe's first priority should be built-in "push-button" Flash express update, and an easy to use SEO function within the Flash IDE.
Advancing the feature-set of Flash player is a waste of time until this happens.