It's called "Getting Lucky"
I'm confident that if there was actionable Intel of a specific attack planned for 9/11, action would have been taken to prevent it, We didn't even have enough Arabic Translators at the CIA to translate the intercepts we were getting. So even if conversations between Mohammed Atta and his fellow Jihadist were intercepted a week before 9/11, we wouldn't have translated them in time to prevent the attacks.
Fact is... We were caught of guard and we learned a very tough & costly lesson on 9/11
Take it one step further. Bush didn't collect this intelligence himself. There is a huge apparatus out there that takes in the data, analyzes it, and puts it all together. So, before it gets anywhere near Bush's desk, it has to pass through all kinds of hands, many of them old Clinton hacks.
If Bush had this information and sat on it, it would mean that a vast dual winged conspiracy is sitting on an immense secret. Even though any one of them could achieve immortal fame and fortune by blowing the whistle, literally hundreds of people have decided to put aside their differences and risk everything for the good of the conspiracy.
Nothing like having an unshakable trust in all of your co conspirators, many of whom you haven't even met. Yep, as much as they probably hate Bush personally, their unshakable belief in the cause of random bilateral conspiracies helps them all work together and keep the faith.