[swagasaurus-rex]

In larger companies, hiring decisions is made by managers with a career agenda and projects in mind.

People who will bring new ideas, rock the boat, offer to do the same task but in an easier way... Don't make good peons for these managers.

That's why Microsoft loves contractors. Contractors will do what they're told and have very little leverage. Empire-building managers there can easily control their contractor work force even if speed and sometimes quality is sacrificed.