Good example on the power of the suppliers./customers. Airlines can be seen as suppliers or customers for Airports. It is interesting to note the fact that Ryannair was negotiating the airport taxes.
Ryanair closing Manchester routes
Ryanair is to switch or close nine of the 10 routes it currently operates from Manchester Airport, blaming the airport's refusal to lower its charges.
Read the whole article at: http://news.bbc.co.uk/1/hi/business/8205445.stm