Some have argued that poison pills are detrimental to shareholder interests because they perpetuate existing management. For instance, Microsoft originally made an unsolicited bid for Yahoo!, but subsequently dropped the bid after Yahoo! CEO Jerry Yang threatened to make the takeover as difficult as possible unless Microsoft raised the price to US$37 per share. One Microsoft executive commented, "They are going to burn the furniture if we go hostile. They are going to destroy the place." Yahoo has had a shareholders rights plan in place since 2001. Analysts suggested that Microsoft's raised offer of $33 per share was already too expensive, and that Yang was not bargaining in good faith, which later led to several shareholder lawsuits and an aborted proxy fight from Carl Icahn. Yahoo's stock price plunged after Microsoft withdrew the bid, and Jerry Yang faced a backlash from stockholders that eventually led to his resignation.