CSGO (where leagues and MM use third-party anti-cheat) is an example where the community deems the vendor's AC insufficient. The most extreme example is Rockstar Games / GTA V, the multi-billion-dollar revenue AAA title where anyone with a free to download menu has far more power than all Rockstar administrators combined.
CSGO VAC is garbage though, and can't not be garbage without being granted extreme levels of access to the system. On Linux you can just run your cheats as root, and they will never get detected.
The slippery slope of giving companies higher access is also seen in CSGO where (Faceit/ESEA, dont remember who exactly) put a bitcoin miner in their anti-cheat. Capcom put a rootkit into Street Fighter V to check for cheaters. Is that acceptable?
