Digital downloads will win and the HD Disc race will be over before it ever started.
My only beef with digital downloads is the bandwidth requirement for anything of DVD or above quality......either spend some cash & 5+ hours downloading a vid, or a 15min drive to down to purchase a hard-copy of the video.
Not all of us got unlimited download here. ;/
(Internet will need to become faster overall for that to catch on wide-spread....and I'd have to buy me a DVD-burner so I could watch said downloads on my PC)