They aren't forced to fund anything. They have the option for an additional value add, that's all.

Valve is known for never funding games which is why my original comment expressed surprise. Of course they aren't forced to fund content on their platform, but I had thought they had changed their strategy.

The clsoest thing to funding we ever got was Activision getting Valve to lower the cut for big publishers so they could get onto Steam.

Otherwise, I can't remember the last time they funded a game they didn't make themselves. Maybe in the very early Steam days, but that's long past.