One facet of this that rarely gets mentioned that I often experience since I live in the EU is subtitle and audio availability is teeerrible for most of the streaming services.

Amazon Prime is unusable because the vast majority of movies that they have is all dubbed and do not provide original audio nor english subtitles. I do not pay money to watch a movie get distorted by dubbed audio. No thank you.

Same goes for a lot of movies on Netflix, although they are way better than Prime.