I think it does two things: 1. It puts these otherwise worthless movies to work and earns some ad revenue even if it is peanuts 2. There is always the chance

I think it does two things: 1. It puts these otherwise worthless movies to work and earns some ad revenue even if it is peanuts 2. There is always the chance a clip goes inexplicably viral on social and suddenly finds new relevance to the point that someone does want to pay money for it.