Having not read the whole thread (there is quite alot of it), but it would seem to me that the office wallahs would probably turn around and go home if their office wasn't cleaned every evening by the contract cleaners, so why can't we have our flight decks cleaned?
At the last company I flew with the 'cleaners' wouldn't even clean the heads at the end of the day's shift. Well, they did, or said they did, but actually all they did was to empty a can of (so called) air freshener into the toilet cubicle. The aeroplane then stank of rancid heads and cheap air freshener, instead of just rancid heads. I realised that getting the flight deck cleaned was a leap of astronomic proportions if we couldn't get the heads cleaned.... I don't know quite why we put up with it, but for some stupid reason we do.