if we look at this we can see that for this particular game linux holds a higher share then xbox, ps3 and mac combined. Somone alert the pinheads.
It sent a message to Id, Activision, etc. that we're "okay" with playing on Windows (even though we're not...) because we BOUGHT the Windows SKU instead of the provided Linux one. It's part of why Loki went bye-bye, if you want to know the truth of the matter.
The games industry is under the impression that we don't buy games, period. It's not true and World of Goo, Penny Arcade Adventures, and similar are helping. But don't tell me that using WINE is helping us any in the medium-to-long term sense of things. It's helping a few migrations happen, more or less, and little more.