It's the same at City Broady and every other ground in the country, I agree with you.
The difference is that yoonited bought the league for so many years that they have a plethora of tourists to take up the slack of "not turn ups on the day"..........for now.
City have a generation to catch up on so it will take time. That doesn't stop Chatty and his ilk attempting to beat us with the only pathetic stick they have left!
Nobody cares however....apart from them of course.
P.S. in reply to to your statement that the more season tickets there are the more there will be empty seats, I believe that City have a higher % of season tickets to capacity than any other Premier League club, as a result your theory is accentuated at The Etihad.