And what about alternative platforms tha don't have an Adobe flash plugin. Do you honestly believe that there only exist three OSes (Windows/Mac OS X/Linux)? At least I can download the .mov file just looking for it on the html source, I can't say the same for flash video.
"illegal" seems like a stretch. I'm on Ubuntu Karmic w/ Chrome and it plays fine through the totem plugin, with no quicktime-specific packages installed.