The guide is primarily written from an "offline game preservation" standpoint and assuming that you already own a copy, but I'm not naive as to who will also ge

The guide is primarily written from an "offline game preservation" standpoint and assuming that you already own a copy, but I'm not naive as to who will also get value out of it, and I do include enough info that non-owners can still follow along. I'm also fairly morally-flexible when it comes to demoing games before purchase, especially considering that publishers often have zero concern whether the product they're selling me will even work on my Linux machine - hopefully that is not something I will even need to think about in a decade from now. But yes, in general I fully agree that you should support when you can, and even from a practical standpoint it's much easier to keep games up-to-date when you own a copy.