I recall reading something from some Netflix analytics-obsessed pinhead about the automatic previews where they said they wanted it to behave more like regular TV where something is on as soon as you turn it on. Then they have it automatically play the next episode by default. I recently read about some other feature they were testing where it would just continuously play whatever their recommendation engine thinks you would like. Then you've got the more frequent churn of content.
Netflix today resembles a personalized stream of an old school premium cable channel like HBO. It's designed to help you quickly find something to watch and then send you down a rabbit hole with continuous content that autoplays as soon as the last video ends. On the one hand, I admire them for doing something different than every other streaming service that popped up after they invented the category. On the other hand, I just don't like the experience at all.