Earlier quoted context omitted.
Can you qualify that statement? edit: You are correct, the player provided by Adobe is not open. However, anyone is free to make their own player, one alternative player is Gnash: http://en.wikipedia.org/wiki/Gnash
Adobe Uses DMCA On Protocol It Promised To Open http://yro.slashdot.org/article.pl?sid=09/05/22/1254246 How do Gnash developers work with the Adobe/Macromedia EULA? http://www.gnashdev.org/?q=node/25#eula Read this two links and come back to discuss about flash openness.
How does Gnash being built without Adobe tools do anything but further proving that you don't have to use adobe products to use/work with flash?
I am not claiming with authority that Flash is open, I am just trying to see how it is closed. So far it looks open to me.
I'm not even a Flash developer, so please forgive me if I am not understanding properly.