...and then you have hypervisor-based cheats, hardware cheats and whatnot. I'd say that AI flagging of suspicious cases + additional targeted scrutiny is the way forward - for competitive platforms, that is. That, and trust factor - I practically never get bad games when I play alone in cs:go/cs2 (~20k mmr eu, lem/smfc prior to that) - both in terms of somebody cheating and in terms of people that are full of themselves in one way or another. I'd say that combining these techniques should be very effective.