Mancur Olsen in the Rise and Decline of Nations, discusses the same phenomena but with rigor. Interests, groups, cliques,etc. organize formally and informally to pursue the group interest, but being composed of men who simultaneously pursue their personal interest, group members must face rules, selective rewards and sanctions imposed on them or the group will disintegrate. Thus through time interests organize and impose a rigidity on the group that gives it staying power but makes it almost impossible to change. The result through time is stagnation, plutocracy and institutional decline, or in the case of nations, national decline. So one can't be too confident that just because they are incompetent they will vanish.