I doubt Gabe actually steers anything these days. Valve as a company might already be on autopilot. Their culture permeates through every employee who works there. I am not looking forward to the day Gabe dies but I don't think vavle is gonna change much when he does. They are already winning without trying. And if they keep the company private they have no incentive to fuck it up.

If valve goes public that's the day we panic.