I'm so happy seeing so many indie titles that are all about LAN and split-screen play. It's definitely happening! You just won't always see it front-paged and have to keep an eye out. :)
Edit: Plus, GoG brought back stuff like Wolfenstein: Enemy Territory, Medal of Honor: Allied Assault, Unreal Tournament 99 and 2k4, that are still an absolute blast. :D
So will those blasphemous grift-bibles. (I'm gonna guess they're still sold?)