As noted by a comment here, SSD and HDD hard drives aren't that expensive nowadays, and what stops the bitcoin team creating full node rewards like in Dash
You can not earn anything when you set up a bitcoin full node and let it runs 24/7.
Mining pools run their full nodes for their privacy and security and they earn rewards from mining. Their earnings are not come from full node operations though their have better privacy and security with the cost they spend for their Bitcoin full nodes.