While Google openly supports and promotes the use of HTML5, it also supports Flash on its latest Android platform. Now that users have experienced Flash on the latest Android OS (v2.2), they have found Flash app/movies to run slowly and cause their Android enabled mobile devices to drain their batteries quickly.
On the other hand both Google and Apple have published respective technology demonstration pages to show off the capabilities of HTML5. Google even made a HTML5 version of their popular online video site, YouTube.
Last week the adult film studio Digital Playground announced that it will convert all its mobile sites to use HTML5 and its native supports for video embedding instead of using Flash videos. This is so that their sites will be compatible with the iPhone, iPad and iPod Touch devices.
In the past technology formats have won over their respective competing formats when the porn industry throw its supports behind it. Case in point is the VHS video tape format over the BETA video tape format; even though experts believes BETA is a superior format, simply because the porn industry decided to release videos only in VHS format.
I believe this support by a major porn video production company will exaggerate the adoption of the W3C HTML5 standard as in VHS over BETA.