One instance runs the protocol today. A node is specified, not distributed, and running one would buy nothing and earn nothing.
A platform that runs on infrastructure one company controls is a platform with better vocabulary. Nodes are the answer to that — independently operated instances that participate in the network — and they are designed rather than running, which this page says rather than implies.
Free to join. Participants keep 95% of every transaction; GRAJ takes 5%. Built for 195 countries — payments live in the United States.