The team got $8.6 million in the initial token sale though. I'm pretty sure they also retained a fair number of tokens. Since there is s fixed amount of tokens the value per token should go up if Golem gets many people to use it and thus the value of the retained tokens rewards the team for their success. A scheme like that of course only would work for a very small portion of open source projects. I could see this work though for pretty much anything that needs hosting. In order to join the network you pay tokens to someone else who is providing that hosting. You could clone pretty much any social network that way. Want to have an account or make changes to your account you gotta pay for the computation.