Gaming

At 16x, you will get 72MB/s read speed. My SSD has a 560MB/s read speed. Because of this discrepancy, loading a game from a blu-ray disc will take roughly 7.7 times longer. A 20 second loading screen becomes a 2.5 minute loading screen. This alone justifies the cost of keeping it on my SSD. Especially because if I want to remove it I don't lose permanent access to the game, I can download it again in a couple hours.

Consoles still have physical storage as an option, at least partially.

For PC: the vast majority of PCs don't have a blu ray drive. So that's a $50-100 expense. Or a 1 TB SSD is under $100. Going with physical media makes no sense here, even ignoring the other glaring problems, like game updates and loading times.

Cost of production of a blu ray disc will be cheap. Packaging and shipping it slightly less cheap. Dealing with a retail store exceptionally less cheap. A digital copy sold will see >95% of revenue kept (first party sales — some amount lost to transaction fees), or ~70% kept (sold on third party digital platforms). A physical sale will see closer to 50%. It's a huge difference.