[deminature]

Obviously in no way does each instance of piracy equate to a lost sale, but even a moderate percentage of instances of piracy that actually lost a sale would be a disappointing total sum lost by the developer, considering the enormous overall rate of piracy.

Also, the 4 million figure is total sales of the first and second games on all released platforms, not solely PC nor following the removal of the DRM, unless you have a source that wildly disagrees with mine. It would certainly be an impressive vote of no confidence in DRM if 4 PC million sales had occurred subsequent to the removal of the DRM, however that appears not to be the case. http://gamespot.com/news/the-witcher-series-sales-hit-4-mill...

[sesqu]

Considering how vastly pirated copies usually outnumber purchased copies, I hope you don't consider "a moderate percentage" to be something high, like 30% would be.