I used to collect Blu-rays of my favorite films - buying them after watching elsewhere. It’s nice to have an actual physical copy of a thing you like, especially it’s some kind of special edition. But I haven’t even tried to play like 90% of them, because it’s too much of a hassle.
Aside from the encryption there are also region restrictions. I have Blu-rays from all 3 regions and every blu-ray player sold locally will play only disks from its single region.
So Blu-ray format tried very hard to stop me from buying and using it and, eventually, it succeeded.
He probably fills briefcases full of bricks.