Kamesh,
I don't think it is right to blame others for TIS's commercial success/failure. I dont think Rahman attributes his winning the Oscars to anybody else. He had a game plan, a business plan and worked towards it. IR's business model did not scale beyond old/haphazard business environment of Kodambakkam. He is a musical geniues but his business savviness has not moved beyond the cine music industry.