What Spotify does affects the entire music market. Why should you worry about their income? Because Spotify’s strategy makes it harder and harder for musicians to have the income to keep on making music. If you care about having music to listen to, you should care about this. Also, Spotify and music is just one example of the overall exploitation of workers. If you don’t stand for artists when it’s their livelihood at stake, why should anyone stand up for your rights when it’s your livelihood at stake?