Instead of outputting a flash object file the Flash tools could have output actual HTML. The Flash Player is, at the end of the day, a proprietary Canvas widge

Instead of outputting a flash object file the Flash tools could have output actual HTML. The Flash Player is, at the end of the day, a proprietary Canvas widget with a ECMAScript based VM powering it. With HTML5 they could have targetted the actual real HTML5 Canvas and completely eliminated the flash player plug in whilst still retaining the tools.