Their routing node makes some amount of money.
Discussion
Is there a way to see this in the network explorer?
Yea you can interrogate public nodes. Their node is huge, routes a ton of payments. They might make $10k/month on this node.
https://amboss.space/node/035e4ff418fc8b5554c5d9eea66396c227bd429a3251c8cbc711002ba215bfc226