It sounds like streaming has definitely caught up to cable broadcast, at least.
Horizontal pans are still an issue there, as well. Also strobes (or big explosions) can create pixelation. If it's a calmer movie or a drama, you may not notice any issues. Action adventure or sci-fi, probably yes.
As bandwidth and speed increases, and as new compressions are invented that allow for a higher-quality picture to be displayed, the gap between streaming and Blu-ray will shrink.
Then it will come down to a storage issue and an ownership issue. As a collector, I like hard copies. I don't want to store my movies on someone else's servers and pay them for the privilege to watch my stuff.
But for people who don't collect, never wanted to, and like renting whatever they watch without quality concerns, this is the way to go.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22