Well that doesn't work at all. That sure wasn't the way to make any control over it. They just lost even the shared control they had.
That's because most of them lack forsight, focussed as they are on their own power and little else. Not only are they narrow thinkers, but find their own failure inconceivable. If they were to consider that possibility, they'd probably think it an acceptable trade off for weakening a rival's access to information. We see them doing things that are detrimental to the war effort and the empire time and time again.