Haha @greyze. You think i'm some blind apple fan boy who likes apple because its pretty! Like I said I run a triple boot set-up and while yes OS X is what I'm currently on, it is by no means the only system I use. Nor would I care if they only realeased the game for Steam OS under the Steam Store.
...Quality of life loss.... I don't, feel that buying a mac so i could go to school for graphic design and computer science a life loss. While I'm on a mac, I would in no way be opposed to buying something like a Razer Edge. Even if I did, I'd still install a bootloader and triple-boot that! Still using Mac / Linux more tha Win!
"bizarre army of apple fanboy accounts" ... well maybe more people are using macs and like them than you thought! Honestly, as someone who just reciently attended a hack-a-thon in los angeles. 7/8 of all sponsors who hit the stage were using macs! Many things that were demoed had full mac compatability! I personally was testing the Oculas Rift Dk2 on a friends mac. while working with things like the leap motion and myo on mine.
So i'll say this point blank to the 35-45 year old developers / decision makers within the company keeping this full mac port from happening regardless of its "tremendous amount of effort" as well as, of course, people like @greyze...
Windows has completely lost the younger generation! While yes, those more unfortunate might still be on windows computers, but they ask their parents for a Mac evey Christmas. They don't want windows phones or surface tablets. They want android/apple phones/tablets. They don't want Xboxes they want a PS4s! You go to the computer labs of any of our leading colleges and look at the mac %s! Go to the study spots close-by look at the mac %s. The only thing keeping anyone on windows is games. The only thing keeping games on windows is the older out of touch developers who don't see or are ignoring whats coming out of tactlessness! So fare warning. Its coming and there is nothing you can do about it. Start now so you can be competitive 5/10 years from now. Be careful, you'll find yourself developing for irrelevant software!