The Failure of the UX Methodology

I can't believe that Netflix or Spotify did that kind of research in the beginning because they wouldn't have ended up with the products they have for this long. If any of you out there have done that, please let me know because it'd be fascinating to talk to you and we'd maybe be in the chat with you. I just want to understand why. Why has it turned out like this? Why is it such a big failure? But, but regardless of that, probably the UX methodology is failed in some aspect as well. It's not off of the personalized, personalized experience. And then add in shared later on. We're not taking into account the context of other people around