A Case for Protecting Computer Games with SGX (2016)
dl.acm.org
dl.acm.org
And any developments like the one detailed here also ended up being moot (at least in the consumer space).
Although, I'm not likely to cry over lost DRM schemes anyway, especially since games makers can't manage to preserve their games and have for years been relying on piracy for preservation.
Hell, the people working on disc ripping software have been working harder to find ways to play the discs on modern hardware than the Blu-ray Disc Association has. The only option is to use unauthorized software to play the discs on modern AMD and Intel boxes, and that's the solution I guess?
I'd like to believe enough people are changing their minds (nothing is higher quality), but it's likely already accounted for in the $293 M and continuing declines. The one bump seemed to be 2022 UHD BD outselling 2020/2021 numbers, but that's probably more an artifact of COVID 19 drop and slight rebound given the following years dropped quicker than ever.