As you already familiar IOTA that it didn't have Fee and No Incentives to run a full node,
But still, you can set up its FULL node and then you can provide service and earn money for running a full node. Running IOTA a node is a way to enter the network which is called "tangle". Tangle Topology is Based on DAG. Means a finite Graph without a loop.
"IOTA Reference Implementation" is a node software created by IOTA foundation to Define how that IOTA protocol should operate. Want to learn how to setup full node and start earning: Visit here This guide claims that you can earn From IOTA by running it's Full node.
Game Starts Now Mining. Follow @jeevanjot to learn more.