I agree with you here. Certainly Spotify has a different scenario - whether you pay or not, there's an extraordinary amount of content you can consume, and you

I agree with you here. Certainly Spotify has a different scenario - whether you pay or not, there's an extraordinary amount of content you can consume, and you do that with no added cost per consumption. Not to mention, they probably have several hundred times the amount of data to use for recommendations since a user changes song around every three minutes. Multiply that by the number of users and average number of songs someone listens to in a session... that's going to be a big number. Also, music choice is mostly preferential. Some preference is used when buying products but most of the time I feel like there's a need which influences the product purchase and this factors more heavily into the decision. Netflix I would say is a good counter-example of a content provider which is based more on preference but again, the content takes longer to consume so there's likely less data than Spotify. Not to mention, it seems they've been giving more recommendation preference to their originals lately.