So if one Steam game starts messing up Macs, Apple could pull Valve's certificate and all Steam games would stop running on Macs with the default settings? I gu

So if one Steam game starts messing up Macs, Apple could pull Valve's certificate and all Steam games would stop running on Macs with the default settings? I guess that just encourages Valve to be careful about what they sell on their store. It will be interesting to see what Valve decides to do.