No doubt GAAR thought process is nothing less than a revolution as its implementation will definitely make the FIIs run away from our country on the shorter time frame.
The Present President of India i.e. former finance minister Pranab Mukherjee had proposed GAAR while presenting the Union Budget for the current fiscal and his aim of implementing the same was to check tax avoidance.
The main aim of GAAR in India was to bar companies from aggressive tax planning by using opaque low tax jurisdictions for residence as well as for sourcing capital. To put it in layman terms we can say that Gentleman please pay taxes honestly and help India grow. Hope the message is taken in a positive spirit by these FIIs.