Netflix is on another level with the care that goes into designing their streaming product. I didn't truly appreciate the Netflix app until also subscribing to HBO Now and using their Roku app.

HBO is missing the most basic UX features like discoverability, recommending the next episode of shows you've been watching, ratings, etc. Great content, but basically no effort in their apps that consume their content.

Netflix is a tech company that got into content, and HBO is a content company that got into tech.