Kaptin you are still contradicting yourself. You say that the low cost operators will have to employ cleaning staff but you also say that they never will employ cleaning staff. I think there is always an expectation that people will leave their seat tidy thats what my Mum called manners but if they don't then the crew have to do it.
To use the hotel analogy how would you feel if when you checked out the young person at reception said "Have you tidied your room?".