Does the Go teacher have a way to make money?

There is a saying that Go teachers make money. Judging from the relevant public information, the income is quite good. The income of Go teachers is quite good. The group playing Go is small, so it is difficult to be a teacher. Only a few qualified people can become Go teachers. Go teachers are basically private teachers, that is, 1 to 1 or 1 to 2. This kind of teaching fee is also relatively expensive, and the income of Go teachers is good.