None is so blind as he who will not see...
Bush has only listened to advisors who told him what he wanted to hear. Anyone who disagreed with him, you may remember, was "aiding the terrorist, Unamerican, traitor, coward."
Presidents Lincoln and Roosevelt had members of the loyal opposition in their cabinets. Bush showed the door to anyone who did not agree (such as Powell...) He is PROUD he does not listen to the news or read newspapers. Protesters are restricted to "First Amendment" areas where he does not have to see or hear them. Audiences are vetted to ensure only those who hold his views are allowed.
Bush chose his advisors and he chose to listen to them. There were other opinions out there. But not ones he wanted to hear. So he didn't listen.
There is plenty to go around....but ultimately...he is the leader...he is responsible.