I see a number of people who use YouTube just to listen to music on their phone. If you have an unlimited plan it's cheaper than paying for Spotify. So instea

I see a number of people who use YouTube just to listen to music on their phone. If you have an unlimited plan it's cheaper than paying for Spotify. So instead of a cheap 128kbps stream they are sending full motion video for someone who isn't watching anyway. I am curious what portion of streaming this represents.