People get 72 hour suspension's because of stupid thing's, etc... runing the AH economy, being online for a stupid ammount of time, yet people deny doing any wrong doing's and jump to the conclussion that the bot is detected when this a guarentee that they did something stupid to get the suspension/bann.
IMO i think Blizzard make out they dont know how to break bot's were in the past they have proved they can,(Glider/LuaNinja/Mimic/Gremlin) if blizz put code into warden (blizz's anti-***** software) to catch every bot getting sold on the market it will damage there income since people wont keep buying sub's/ key's. Now if blizz banned a few thousand members every few week's they know them people will buy new key's/sub's.
Blizz will detect bot's once in a while to keep the legit players happy and not let bot's gett a "X" ammount of a user base.
That's what i think, people may think otherwise.