Many people are puzzled: why would Taylor Swift, one of the world’s biggest pop stars, remove her entire catalogue of music from Spotify, a streaming service that pays her millions of dollars each year? Swift made the move in Monday [because she] believes she can make more money from CD sales and downloads. The decision goes to the heart of the long running debate about the best way to make money from recorded music… While artists get fees form Spotifys paid subscriptions, they do not get revenue from the free tier on Spotify, which drags down the artist royalty payments.