Do you really own media on a Blu-ray Disc though? As I understand it, the media is encrypted with advanced DRM and can only be decrypted with a “secure” player+tv chain.

They can be liberated to a DRM-free format using the right software

i thought such software is technically illegal under the DMCA

I bought a blue ray reader writer drive for my PC. I learned that apparently a PC blu ray drive cannot play movies. I own the drive, i own the disc, why can't I watch my movie? Because every customer is legally obligated to help protect the film industry's bottom line?

It can play movies. You need software that supports playback. This is true of DVD too although for awhile MS bundled one with Windows and Apple with Mac OS X. These days MS doesn't and you need to download one separately. A program like PowerDVD or WinDVD will let you play both.

the DMCA only applies to 4.23% of the world's population

Thanks to the Intellectual Property provisions of various international trade agreements I'm pretty sure that's not accurate.

Thanks to the EU a few percent of the world population have explicit permission to make personal copies.

And yet it exists anyway.

You own it to a greater extent than you own what you get from a streaming service.

Either way, they work offline, and no company can take it away from you.

Wth aacs, can't new bluray discs revoke older certificates if they are compromised?

Misinformation.

Cunningham's Law