The real world isn't as simple as politician on either side of the aisle want to make it.
Parts of the the Pakistani government, especially the civilians and diplomats, were undoubtedly completely in the dark about him being there.
Parts of it were completely complicit in hiding him either because they supported him (Especially the ISI) or because it was a great deal to have him securely locked up but still get paid to look for him (Especially parts of the military).
Other parts yet knew he was there and covertly cooperated with us, but aren't about to paint a target on their chests by saying so now. Think for a second about the whole 'Safe house keeping the compound under observation' part of the fairy tale: Do you seriously think that an observation post within half a mile of their military academy and with clear observation of Bin Laden's compound operated without ANY sort of cooperation from people within their security and military communities?