Valve ban advertising-based business models on Steam, no forced adverts like in mobile games
(www.gamingonlinux.com)
They won’t because they’re the ones making money from it.
I was (trying to) be tongue in cheek about it, so yes of course they won't. I just don't like the idea of propping up Valve as some incorruptible, can-do-no-wrong company. They know they're causing children to gamble and it's not that they don't care, they actively encourage it.