Don't forget the expensive talent they hired. A May, 2018 Netflix news release:
"President Barack Obama and Michelle Obama have entered into a multi-year agreement to produce films and series for Netflix, potentially including scripted series, unscripted series, docu-series, documentaries, and features."
When enough Netflix subscribers don't watch a particular show, it gets cancelled.
Having Obama on board doesn't have anything to do with the overall content or political leanings of Netflix itself.
Netflix is a fantastic deal. For $13 a month, I get to watch hundreds of films and TV shows and documentaries instantly without getting ripped off by cable or video rental stores.