See, I read this, and I start to think, whose greed? I think it's the greed of the consumer, insisting on free things from the community at no cost to them. Obviously, Besthada and Valve want to make a dollar or two, but in this case, the consumer is demanding stuff and not willing to pay for it. This whole volunteer thing is complete hot air, a rationalization for consumers who want more free stuff.
Artists (painters, musicians game designers, engineers) are always are doing what they love for the community or for fun. I'm sure that this was true of the Beetles, Rolling Stones, Andy Warhol, Michael Anglo or even Steve Jobs. Any artist you can name. I would think they were all motivated by something other than greed, because they loved their medium and enjoyed the attention or got laid. In the end though, they all charged for there labor. They still asked for a buck or two (or several thousand).
Now, because these thread already went down the Godwin route, I feel that this next statement is fair game.
Feeling upset about paying for someone else's work when it was at one point free makes sense, it really does. I'm sure the plantation owners in the south felt the same way back during the civil war as well.