That's how it is now Paul. Recorded music is virtually worthless,playing live is the only way a band/performer will make money. Songs are just an add on to what makes up the show.
We've had years now of recorded music being freely available,folk just aren't used to paying and thus the product has been devalued. It used to be people wanted to own a music collection,now the trend is shifting to streaming,it's even more transient than in days past.
Mined ewe,I am surprised at the examples in the article getting so little. Rather discouraging if you are aiming for monetary success.