There was something I thought about for a long time. The size of the Canon R series Firmware files helps to understand how much the camera software is open to development.
R series, average firmware file sizes:
Canon Eos R: 34 -37 MB
Canon Eos R6: 50-51 MB
Canon Eos R5: 49-55 MB
Canon Eos R5C: 87-88 MB
Canon Eos R3: 85-86 MB
Canon Eos R6 Mark II: 75 MB
Canon Eos R7: 70 MB
Canon Eos R10: 69 MB
R series, average firmware file sizes:
Canon Eos R: 34 -37 MB
Canon Eos R6: 50-51 MB
Canon Eos R5: 49-55 MB
Canon Eos R5C: 87-88 MB
Canon Eos R3: 85-86 MB
Canon Eos R6 Mark II: 75 MB
Canon Eos R7: 70 MB
Canon Eos R10: 69 MB