Many here seem to confuse "availability of more content" with the "long tail".
The "long tail" concept about content, as made famous in the 00s by Chris Anderson's best-seller, is about the distribution of content consumption, not it's mere availability.
Basically about how many views/streams go to a small ("popular") part of the catalogue, and how many to the long tail.
Having more content available (or some people watching less popular stuff) is required but not sufficient property to have a long tail effect.
The "long tail" concept about content, as made famous in the 00s by Chris Anderson's best-seller, is about the distribution of content consumption, not it's mere availability.
Basically about how many views/streams go to a small ("popular") part of the catalogue, and how many to the long tail.
Having more content available (or some people watching less popular stuff) is required but not sufficient property to have a long tail effect.