> Spotify is rolling up the internet audio market, which their CEO, Daniel Ek, thinks will grow from $100 billion in revenue a year to somewhere near the video market, which is $1 trillion. People spend about the same amount of time consuming audio as video content. “Are our eyes,” he asks, “really worth 10 times more than our ears?”<p>An economist might be able to articulate this better than me, but this is likely due to simple supply and demand. Audio content is easier to produce, which makes a higher supply and a lower price. It is quite possible that audio is undervalued, but there is no reason to believe that a 10x difference between audio and video is unreasonable.