Yeah that sounds great "hey games are $10 cheaper now" but you know what? They will probably have 25% less content on the disk and they will sell the remaining 25% of content that should be on the disk in the first place as DLC and when alls said and done you will probably have paid $70 or more for the game that would have been $60.
That's my opinion anyways. Thank goodness for games like Fallout 3 that offer 100+ hours (including side missions and fucking around) of fun before the DLC is even counted.