Do people actually buy blu-rays?
Apparently, probably the ones who live in a place stuck in 2001 internet speed wise...
I still ( like always) wish optical media dies out as soon as possible, slow, messy, annoying, old rubbish tech...
If you want physical media: Flash or external hdd's all the way. Why would you want to use crud like blurays if you can carry a small 2.5'' 1tb hdd with you, or a couple of tiny USB sticks ?
Otherwise a decent fiber or cable connection is far superior...
Your hard drive blows up and takes all your 1080p HD movies with it...
Now what?
Click download.
Go down for a coffee/tea/poo.
Come back in a couple of minutes ( about 7 minutes for a 10gb movie).
Click play.
Faster than searching for a bloody optical disc and putting it in a bluray player, looking through all the warnings, etc, or even buying one.
Or in case of popcorn time: type in name of movie, click play, plays within 5 seconds...
And like the other guy said, no need to keep it after 1 watch.