They are not incompetent
No one fails to notice the construction of a megamansion surrounded by 18 ft walls topped with barbed wire, within sight of an elite military training academy, and occupied by non-Paki individuals
much less the intelligence service of a quasi muslofascist police state like Pakistan
Pakistani miltary and intellgience is run as a feudal/tributary system, what also needs to be asked is exactly which feudal lords were holding Osama as an asset.
More than likely it’s the same group of lords that Rumsfeld agreed to pay US$4Billion annually to in form of tribute.
THen we have to ask why the US Intelligence community continued to work with senior members of the PMA after 2009 when it was discovered that this compound was holding a terrorist VIP.
Looks like we paid US$8 Billion in tribute to ISI, a fruitful venture for the terrorist wing of the ISI.
It was not a megamansion and is actually quite ordinary. Although the compound is larger than most, walls topped with glass or barbed wire are the rule rather than the exception
What is not clear is whether Bin Laden needed constant medical care. If so, there may have been a quid pro quo with the ISI: We give you medical help and a compound to live in; you lay low and let Zawahiri handle the remnants of Al Qaeda. You re-emerge at the time and place of our choosing.