These have even been put into practice, with the Canon EOS C700 GS PL offering the option for a Super 35 global shutter – although this is a far cry from the form factor of an A9 III or Canon's ...
Canon sold a 4K/60 Super35 'GS' global shutter version of its EOS C700 camera, back in 2017, though available specs suggest its sensor was slightly smaller, so presumably wasn't the same as the ...