What economic incentives would help wider geographic distribution of bitcoin nodes? https://bitnodes.21.co/

Full nodes are important everywhere providing visibility and improved network latency. In areas where bitcoin mining is not profitable due to the high cost electricity or other factors what incentives can be used to increase the number of nodes?

Will 21.co be successful in its efforts to install mining equipment in mobile phones and other consumer devices across the world?
No incentives to run nodes are required. As people in these countries are presented with more use cases to use bitcoin, organic growth in the number of nodes will follow.

International money transfers and a superior alternative to M-Pesa for retail transactions are both attractive areas for growth in some of the areas with limited node counts today.