Adobe has shown no contempt for HTML5, while HTML5 pundits continually rip Flash. Adobe has repeatedly stated that their Flash product and their Web products serve different goals and markets, and they are in the business of providing cross-platform solutions wherever there is a demand. If you watched the keynote today, you would have seen that Adobe itself is creating some of the best HTML5 / CSS3 dependent applications. They would only be crippling themselves to undercut the progress being mad in open Web standards.