You cannot develop nor enable hardware acceleration if the manufacturer does not open up their frameworks or os. That's why it never was something that was available for download. And it's a third party application that needed to hook into the resident browser. So if it were closed, then what?
Adobe makes no money off of Flash on desktops. They make money from the tools. Adobe open sourced the *.swf file format. They kept the Flash Player closed source. They kept *.fla file format closed. But you can make your own *.swf via HaXe and other open source means. Adobe made their money elsewhere.
Blame the handset manufacturers for not opening up their devices. Blame the handset manufacturers for not making the situation better and more open. And if the handset was open, better hardware should have been picked - picking for now and not later, wrong move. The only bastards are the folks that don't have HTML5 solutions in place while saying it's "the" solution... but yet it doesn't answer all fo the questions quite yet. I'm impatient too...