You can play full-screen, streaming, 1080p video without Flash, you can render vector graphics without Flash, you can use OpenGL without Flash, you can play sound without Flash, and you can write code that is dynamically compiled to native machine code... without Flash.<p>So apart from missing libraries (which Adobe would port), I fail to see what Flash is needed for.  Modern browsers have the ability to do everything Flash does; and if they don't, the ability can be added.  (Adobe could even add the features themselves; every relevant browser is Free Software!)