The Artists/Songwriters get very little from the pie, something around 3-5% of the gross, which isn't much. If you are in the selling of CDs, which go for around $15 each (plus minus $5), the distribution channels get almost 50%, and the record labels get maybe 40%, and the crumbs left over (10%) gets divied up for those left over, which isn't very much AT ALL.
So the rate of royalties for artists can make a difference, since lots of the costs are eaten up by those who push the product. Production isn't cheap, nor is things like inventory and advertizing to get people to like/buy the product.
Oh, well. Live and learn.