It goes well with my own thinking too, that (in management/power) you want people who are focused on the outside world, with a “selfish” desire to affect/change it. When they act “selfishly” they will at least do something resembling executing on a strategy.

The people you really want to avoid are those that are not very talented or able and just want power for its own sake. When they turn “selfish” they will focus within the organization, promoting cronies, expanding their power base, etc, etc. when others see this the culture goes to hell...

That’s my current theory at least. :P