Is bundling just a sneaky way to pay lower rates to songwriters?

Spotify started offering limited audiobook listening late last year for no extra charge -- after the first price increase in the company's history went through for all US premium subscribers. What Spotify did was bundle their paid-for music subscriptions in the US with its nascent audiobook service in an attempt to lower the rates it pays to songwriters and music publishers.  Spotify says it's entitled to bundle services in this way.  In this episode, why former Spotify Global Head of Music Publishing Adam Parness sees it differently.