I've been running a full Bitcoin node on a raspi for almost 3 years now. I keep it up to date and sync'd, and use it mainly for my own education and to monitor my utxos as I hodl. I suppose it adds in...
I doesn't seem that running a lightning node is profitable at this time. Maybe if running a node becomes almost automatic with little attention needed, we won't look at running it as a profit center as much as just knowing you're part of a free market operation.