* Without considering whether or not Valve is reasonably at fault, I'm going to go ahead and say that the man who filed the first suit indicated above wasn't winning. Gee whiz, Mom! I didn't know that actions have consequences, and that sometimes, you lose! Again, regardless of whether Valve should be on the hook or not, I doubt he'd have filed suit if he was a better bettor.
* For the second lawsuit, where the supposed victim is/was a minor, same question: Was he winning? I imagine that to be slightly less a factor, as his parent(s) might be aware that winning streaks can end in tears. However, WHERE WAS HE GETTING THE MONEY? How was he spending it online? Not so hard as it once was, but perhaps they figure that their perfect little angel would never have engaged in such mischief if hadn't corrupted hi pure, innocent heart.
Sometimes this stuff gets under my skin. I understand that demonstrating you've been harmed by another party is an important step to convincing the courts to intercede (and/or convince another party to make changes BEFORE it goes to court), but that doesn't mean it can't piss me off.