Oh I agree, but you would be surprised at how many gamers that are not as attentive to development and who do not visit the number of gaming websites tat we do, still refuse to purchase on line. Of course, that is changing fairly rapidly, but the online distribution is still, relatively new.
I participated in a Beta for another game that was only going to be released via download (initially) and people on those general forums said they would not purchase if they could not pick it up in a B&M.
I held off for a little while, not for fear of losing my game in anyway to an outlet disappearing, but I just miss the boxes and printed manuals. Decent printed manuals have, however, pretty much died as well.