[atchoo]

> having good recommendations was the sort of thing that would keep the service "sticky" and prevent subscriber churn

It's the opposite. The primary cause of churn is that there is nothing a subscriber wants to watch. You might assume that a recommendation helps a user maximise the amount of the library they will watch but it actually helps the user conclude there is nothing they want to watch and leave.

Netflix wants their library to be more like a one-armed bandit. Users have to gamble on whether they will like something and they will never know they have run out. They want the user to keep hanging on, to keep scrolling, assuming something great is just around the corner, never getting to "I'm done with this".

I noticed this effect with the DVD subscription. If you added 3 discs to your queue, they would send the first two but not the third, waiting for you to add some less desirable titles to your queue, which they would send before they sent your high priority title. If your needs get satisfied, your subscription ends. It's a fundamentally user hostile business.