Comment by dfxm12

There are fewer music rights holders, so it is easier to get them together in a room and agree to, for example, a piece of Spotify in exchange for licensing the music. Thus, Spotify becomes like a defacto standard with reasonably all popular music. Just one subscription for what the average listener will want.

Right now, there are too many film distributors and services, let alone TV, plus a lot of exclusives that people want to watch. These video streaming services seem to be trending towards consolidation, but I think film distributors remain diverse.