Imagine a new console game selling 500000 copies whether disc/download at 60 bucks vs 1000000 copies at 5 bucks.
I'm assuming you're talking about 1. PC games with comparable scope to console disc games, and 2. the first year of sales, as opposed to several years later when a console disc game is likely to have gone out of print. Am I right? If so, I'd love to read a few sources.