oh, don't get me wrong I agree.
But then again I've been to the labs of 4 network equipment manufacturers (cisco, foundry, extreme, nortel).
Not the dog and pony show labs. The working labs at their respective heaquarters. Talk about wire strung every where. And believe you me, the OP posted pics are super neat compared to these pictures.
I agree though cable management is super important and I'm a stickler as well. But in a lab you are constantly changing things...constantly...and taking 2 hours to properly route a cable that will only be in place for 30 minutes doesn't makes sense.
1st rule of lab - though shall not productionalize anything in the lab
2nd rule of lab - we do not speak of lab