They aren't beholden to Wall Street thus don't have the artificial Sharks Keep Moving mentality that is the animating force to most enshittification spirals.

It's this neat trick called "being privately owned"

Of course, that's not always the case (See: Elon Musk), but it is a lot of the time. (Valve, Arizona Ice Tea, and LEGO(to some extent))

But seriously tho, unless Gabe has a succession plan in place, im afraid Valve is done for once he's gone.