It does contradict the claim that "Linux users will not pay for software" directly. You also have to note that while Windows users are more likely to own the g

It does contradict the claim that "Linux users will not pay for software" directly. You also have to note that while Windows users are more likely to own the games prior to any given Humble Bundle sale (esp. given that many games were first ported to Linux specifically for a Bundle) at the time of the sale they are unlikely to find a better deal on any of the games either separately or as a package, even games unlocked for beating the average payment. That would make buying those games from the Bundle a rational choice if you are a Windows user and want even one of them. Of course, the above argument doesn't negates the fact that Windows gamers have more choice. For them the opportunity cost of paying more for a HIB could be not buying another game on Steam, GOG or elsewhere. I guess in the end it all hinges on how much the buyers (all of them: Windows, Linux and Mac users) are interested in playing those games specifically vs. playing any games at all. If they are interested specifically in the titles sold, then yes, the statistics would mean that Linux users are more generous. Otherwise it's probably more about opportunity cost.