Obama’s first highly remunerated ($400k) speech post-Presidency was at a ‘healthcare conference’ organized by Cantor Fitzgerald. He would not be making that kind of coin off the Wall Street/Big Med nexus if he had destroyed their lucrative ‘business model’ seven years ago.
http://www.cnn.com/2017/04/28/politics/bernie-sanders-obama-wall-street-speech/index.html