Yeah, which AIR should be going out to other platforms as well (maybe way later). Actually, it's not a company's decision to support HTML5, but the browser. Since most of the mobile browsers are built on WebKit, which supports open standards, and HTML5 is an open standard, the browser gets updated to support the standards. Someone who doesn't use WebKit is MS with their IE browser, which is proprietary.
Wow, lol. You did read that MS and Adobe are working together to get a plug-in for WM7 right? Why didn't Android have native Flash out-of-the-box?
Why didn't WebOS have it as well? It's not that the companies don't want it.
The product isn't even out of Beta, maybe even Alpha phase.
Everyone, but Apple, is in the Open Project to get native Flash support in their mobile OS/browser.