This question already has an answer here:
So I am currently running a full node, as well as a GPU miner. I am curious first of all where do DApps get run? They wouldn't make sense to run on a GPU as they aren't very parallizable, so I am assuming by a full node. But I never noticed any income being generated by my full node. Where does all the Ether go that is used in Gas to run a DApp? Someone must be running them, and I presume they would get the gas a reward?