More like Sony doesn't want to cannibalize selling their own dedicated Blu-ray players for a much higher profit margin.
A $100 bluray drive, an Ugoos am6, and coreelec can get play everything for way less than a high end bluray player that can cost $1000.
As someone who checked it out for physics here's my experience:
Anything that could easily be found and be correct that would be found on chegg, would be easily repeated by chatgpt, and with usually clearer solutions that was easier for slightly different problem prompts.
Anything that could not be well answered by chatgpt likely would not have a good solution on chegg, being either outright wrong, or extremely confusing as an answer.