I see that you are being sincere here, so I won't make another sarcastic reply. I just think that stronger arguments than that will be needed to convince people to switch over. The command line is a non starter for most people who have no special interest in information technologies. As for the cost of the OS, it is rather immaterial right now, because few people buy it at retail, so they never see the bill. Finally, I think the gaming crowd is not the best one to cater to for an alternate OS, because
1. there are not that many games on Linux;
2. the small community makes it difficult to get support when it doesn't work, for instance sound issues are pretty frequent, at least in my experience;
3. I have seen some performance issues, but that was a few years ago and the situation may have improved;
4. Gaming rigs can be expensive, so again, OS price is less of a factor.
I would expand on these points, but I have to go now. Please accept my apologies, for I will not be able to answer any reply you make to this post in less than several hours, perhaps even until tomorrow.