^^Nathan brings up a good point and makes me think of one more factor that this view doesn't appear to take into account: playfulness. We're inherently attracted to play in some form or another and will often go out of our way to engage in something for free as long as it's fun. Amateur sports, fantasy football leagues, XBox achievements, custom maps/levels/characters/content, etc. all take work, time and passion for little or no monetary gain because they're fun. If you took some of Mr. Pink's examples and instead of money, made it a game to see who could come up with the most creative solution, the results might be different.

For every developer whose intentions are for the best, there's least one person standing behind him with dollar signs in their eyes and their hand out. Until we have the physical needs of every human on this planet taken care of we'll still focus more on killing each other than bettering ourselves or society.