Art Mags Won't Talk Money?

I read a number of art publications on a regular basis. I notice that there is a lot of data on how to paint rocks, trees, etc.
I notice that there is very little nuts and bolts information on the business
part of being an artist. There is one magazine that show artists in there studios, some of which are as big as my house. I wonder how these artists can afford this kind of workspace. I know that one has to sell a lot of art
to have some kind of artlife.
I wish that art magazines would ask artists about money.
The dicussion would be informative and helpful in my opinion.
No money, no artlife.