Basically, one distro or a few(at most) may get anti-cheat integrated one day(like, say, SteamOS), but it will likely never be in your standard Linux kernal.

Valve also has server side anticheat in his games (Counter Strike or Deadlock). They are also against it.

Kernel-level anticheats can be bypassed anyways, but they are the easy solution for the corps that want to sell their multiplayer game.