Let's put it this way. If you put your own stuff in a drm-free format inside a blu-ray disc authored by yourself, the PS3 will play it. There goes the openness.
But to distribute content (movies, TV, videos, etc.) on Blu-Ray you HAVE to copy-protect it. As in, you have to pay to license the Blu-Ray format, and then the terms and conditions state that you have to separately pay for the license to AACS, and use it to copy-protect the disc. Thus releasing open content on Blu-Ray is pretty impossible.
a theoretical mathematician
as opposed to an experimental mathematician?
this marks the first time since the return of Steve Jobs to Apple that the CEO and board chairman were different people.
No man is an island if he's on at least one mailing list.