I've literally never subscribed to "cable", though my internet service these days is through Comcast, so coming over their coax. We subscribe to a bunch of streaming services because we get value out of them:
Prime - Subscribed for the free delivery, which we do make more use of than the streaming service, but it has some great shows I love so...
Disney+ - backlog of stuff I want to watch, plus new stuff of interest coming out frequently
Apple TV+ - actively watching several shows on here
Netflix - Haven't been watching it much in months, maybe could cut this for a while
HBOMax - John Oliver and movies mostly now.
Hulu - we watch a ton of cooking competition shows here
Youtube - it is SO good with no ads
Curiosity Stream - to get Nebula, but I've enjoyed some of the documentaries
Nebula - to support a bunch of YouTube creators I like
Corridor Crew - creators who run their own website that I subscribe to support them further even though I mostly watch their videos on YouTube.
my ridiculous new TV came with Sony's BraviaCore streaming service which I've watched one movie on now (the new Venom), and on my gigabit internet connection it is on par with my 4k Blu-ray player for quality. The TV came with a bunch of movie credits which I will use on here, and if the service succeeds, it seems like not a bad place to see super high quality streams from their library. We will see when the credits expire or if a monthly fee happens at some point if I feel it is worth it, but the library of movies looked good so...
Does that count a streaming taking over?
I'm buying physical media for my 4k Blu-Ray, but I won't be surprised when streaming down higher quality than Blu-Ray is a mainstream thing. I've looked at Kaleidescape and that is not currently looking like a sufficient quality boost to go to, especially with the expense of their hardware (it isn't technically a streaming service as you download the movies to their custom NAS and player hardware), but BraviaCore was good enough that for movies I don't need a physical copy of, I'd be very willing to watch them on there (and even though they are much more compressed, for most viewing any of the streaming services give a perfectly good experience).