Not to mention, someone will find a way to block the scanning process or divert it. Thats just show and tell for the non botters.
If Blizz bans all the botters, they will lose half their annual revenue.
IndeedDo you know how simple it is to hide a process
If blizz really want to give the botters a ban hammer - why haven't they ? it is so easy to spot them in BG?s, and no need need for a master brain to spot the grind / quest bots either.
I have also helped a few years ago decode the infamous screen shot "water marks"