Corporations didn’t lead the charge but they have a higher chance of better compliance because of their size and age. There are of course superb independent restaurants but there are also terrible ones, a corporate parent provides a decent signal that a minimum of safety policies will be followed. A finicky machine that breaks all the time because exact procedure isn’t followed sucks for uptime but is great for safety. Preferably the ergonomics of the thing would be redesigned for robustness but it seems incentives aren’t aligned properly.