Answering my own question about super-compressed RAW, I see that Nikon has already done that with the Z9. It drops the 45 MP image down to 22 MB, and gives over 1800 continuous shots at 20 fps (which is a buffer size that even I would be happy with). They also have a 'regular' compressed RAW that gives similar performance to the Canon CRAW at 33 MB per image, but with a smaller buffer of course. I didn't look into the impact on image quality from the super-compressed version, but it's bound to take a bit of a hit. I'm quite encouraged by this --- it makes a dual purpose camera quite feasible, where you can have a super-high MP mode for the pixel peepers, and a fast-shooting movie making machine for the blasters like me