This stove piping of information also benefits government contractors offering solutions. They take advantage of this non sharing of information and sell and develop products for each agency, when the government already paid for the products once before.

Stove piping information can be to maintain control and make sure your program is funded. To remain relevant, these agencies are run by people who also have a self serving interest, as well as most being patriots. They want to be the Patriot in charge.