In 2004, many of MGM's competitors started to make bids to purchase the studio, beginning with Time Warner. It was not unexpected that Time Warner would bid, since the largest shareholder in the company was Ted Turner. His Turner Entertainment Group had risen to success in part through its ownership of the pre-May 1986 MGM library. After a short period of negotiation with MGM, Time Warner was unsuccessful. The leading bidder proved to be Sony Corporation of America, backed by Comcast and private equity firms Texas Pacific Group (now TPG Capital, L.P.), DLJ and Providence Equity Partners. Sony's primary goal was to ensure Blu-ray Disc support at MGM; cost synergies with Sony Pictures Entertainment were secondary. Time Warner made a counter-bid (which Ted Turner reportedly tried to block), but on September 13, 2004, Sony increased its bid of US$11.25/share (roughly $4.7 billion) to $12/share ($5 billion), and Time Warner subsequently withdrew its bid of $11/share ($4.5 billion). MGM and Sony agreed on a purchase price of nearly $5 billion, of which about $2 billion was to pay off MGM debt. From 2005 to 2006, the Columbia TriStar Motion Picture Group domestically distributed films by MGM and UA.