I don't buy gaming material to "keep a company afloat" or anything like that. Actually, at this point in life I have an extended RPG library and I don't believe I have the need to purchase any RPG material for years to come.
Same here. I could run a weekly RPG session for the rest of my life and not have to buy anything except replacements for lost dice. I have more adventures than I would ever run -- especially as I like to create my own and play using game systems that encourage that. I might buy an adventure or setting every once in a while if something really caught my eye, but I'm not going to be keeping any company afloat on my purchases.
This is one of the reasons I really think simulacrum games need to be published with the aim of attracting new players, not just being a set of rules publishers can use to publish material for older editions of D&D under the legal cover of the OGL. Most of the people playing older editions now probably don't need enough new professionally published material to make publishing such material a truly profitable activity.