Going on vacation as a consultant makes you acutely aware of how consulting revenue scales like crap. I've literally had 2 week vacations which cost me $20K+ ($5K in travel and $15K in lost revenue).
I'd frequently joke with my wife that she should really enjoy sipping that $100 bottle of beer on the beach.
Ah, First World Problems.
I see your point and I actually agree with it. It was a total whine post and yes, I am very privileged as compared to most of the world.
However, amortized or not, the true cost of taking vacation becomes so explicitly apparent when you are consulting that it's difficult not to think about while ON vacation.
There's also the fact that they generally have less flexibility with regard to the amount of time of they're able to take off (and quite often, as to the timing as well), and in most cases certainly can't cash in on unused vacation time (by converting it to raw income) the way consultants can.
So in this context (and given the annual net that you imply you're taking in), it sounds like you're looking for something to gripe and moan about, for the sake of griping and moaning.
In terms of amortized vacation, yes. Employees pay for it throughout the year, and then can draw on it like a small bank account. One of the reasons I went into consulting was for more free time to travel. I don't know of any full time positions that would let me spend 1/4 of the year traveling.