PC software/e-retailers .like Steam, Origin and gog.com have shown it can be highly successful. Just look at the PC retail space (or lack of). On the other hand, if you can find a physical copy cheaper at online retailers, then digital downloads are going to be seriously hampered.
Basically, digital download won't overtake retail until prices reflect the lower overhead of having no physical media, case & manual and that's completely dependent on the greed of the publishers.








