Every system comes to a time when no amount of competence on the part of its security forces will hold it up any longer. A study of history will confirm that. Systems, like people and other living things, have a finite lifetime. Their future is uncertain, but one thing is certain...they will be replaced by something else one day. The less competent systems (and lifeforms) tend to pass away sooner, but they all pass away eventually.

Yeah, I'm sure the East German leaders were perturbed with the Stasi's failures. The stasi probably felt the same way about the political leaders. Their time was coming to an end. Everyone tends to blame someone else for it when that happens.