Well, what incentive do I have to help people I'll never see again with things like holding doors and watching their stuff for them while they have to go to the bathroom, etc? Nothing more than being a good citizen. Freenet and I2P, etc, don't cost you much to run. Just some bandwidth and CPU. If you demand payment for that, you should understand that far from all of the people who needs these networks can pay for it. You can't let greed run everything.