I'm on the fence with the utility of streaming sats with existing services. I can see it being very useful - especially to people that consume little or are frugal. But for people that watch TV nightly, for example, it might be a better deal to pay a monthly fee. I see it a bit like a buffet - it's not totally worth it for a light eater but it might be a steal for someone that can pack it away.
I think something that'll be interesting to see is that directors/creators can make stuff and potentially bypass services like Netflix/Hulu/etc. If someone could make a TV show/movie and then get paid per minute streamed without needing to worry about merchant fees, user accounts, etc then that'd be interesting.
Of course, existing studios will have lots of money/power and will make a bunch of the big hits and those might stay on platforms like Disney/HBO/Netflix/etc but I could see artists trying to build a name for themselves.
In the far future maybe someone like Christopher Nolan directs an AI to make an epic movie or show. He then posts it to his nostr account and people stream sats to watch it (or just pay a flat rate up front).
I guess someone just has to make a decentralized video/music streaming protocol that streams sats to the authors and those hosting the files. One issue, though, is probably copyright/DRM. Christopher Nolan might not want to put a movie on this service if someone else can just copy it and sell it for cheaper.