Smart people notice the "Disc Based Games" - sure things continue as they are for those.
I honestly can't remember the last time I purchased a physical copy of a game for my PC - if it's not Steam, or in some indie bundle, I don't bother (simply not joining multiple online delivery services, sorry late comers).
It does strike me as odd that "Console Culture" still hangs on to physical media, but as I was explaining to a friend.... Buy, Beat, Trade is the way consoles have been as long as I can remember (who you traded them to simply changed).
I expect that "trade" will go away with physical media. Whether or not anything similar pops up for the digital arena will be interesting to watch.
I should be coding.