Netflix doesn't have input lag and charge you Blu-Ray prices for a single movie.
Yep, there is little downside to streamed movies and the price difference is crazy. There are movies I've rented for $6.99 off apple store in 4k dolby vision - and the same movie on 4k bluray can cost up to $50.
Since physical video rental stores no longer exist, most consumers aren't going to pay nearly 10 times more for a bluray disc.