I agree entirely about MAN's transport links. I too was in SYD a couple of weeks ago and thought about the criticism of MAN when I read you had to pay an access few to arrive at the airport by train.
As for being 'aviation to make money" rather than shops etc, I think we all need to accept that airlines simply don't pay as much as they used to. These days we're not just talking about the LCC's screwing an airport over but in fact all airlines pay less now than they ever used to. The result being that the airport has no choice to supplement aeronautical revenue with ancillaries such as retail.