[QuarterReptile]

I'll cite Conquest's 3rd law: The behavior of any bureaucratic organization can best be understood by assuming that it is controlled by a secret cabal of its enemies.

That's not exactly explanatory, though. Any time a position is powerful or enriching well beyond the extent to which it serves others, the people optimizing to seek out and attain those positions are those who want the power and wealth, rather than those who care about the organization's mission. For those people, the original mission is, at best, a distraction, and at worst actively antithetical to their personal goals.