It's the whole "Do as I say, not as I do" motto. In their eyes, you are workers, and they are employers, so these objective tests don't apply to them. They hire based on their need and not your wants. They don't need another Eric Schmidt, they need more lemmings to do lemmings work.

Ultimately, that's how I think these companies eventually mature. The people that know how to steer the cargo ship retires and you are left with workers that only know how to do the work assigned. Bureaucracy ensues and no one dares to steer for fear it would sink it or get fired for causing unneeded risk. And plus, they don't know how to.