To get to the top you need to network upwards. Focus on your superiors. Get the promotions. Climb the ladder (or shin up the greasy pole).
Trouble is, as you progress your way up the pyramid, kicking and shoving your way past your peers, the number of people above you gets smaller and smaller. Your network leaner and leaner. Until you get to the top.
And then, after a career of networking upwards, there’s no-one left to network with. Well, unless you believe in God. And believe that he can be cajoled into providing you your next role.
No wonder there’s a disproportionate representation of psychopaths in top jobs*.
* read Oliver James’ Office Politics for the substantiation of that claim.