@CCP_Peligro said there will be a dev blog SOON™ regarding bots and RMT…Expect it somewhere around 2035 AD 
I think they cannot deal with the issue so far despite the bans, because people always find workarounds. Abusers seem to always be one step ahead.
To be honest I felt good when most of the ISK from ghost training was taken back…So, another Dev blog will make me feel better to know that there are some results.