CO
Your response is unfortunately irrational from a business perspective. If you were making a profit in other area's whilst also having the burden of covering substantial annual losses £2.5M or whatever, then the area of loss would be addressed as deemed appropriate.
It is likely that any action other than closing/disposing of such areas would be an option.
What is missed in all of the continuing diatribe on this matter is the delusion that the airport (other than the land!), has any commercial value to an investor.
Basically the infra structure is poor, the buildings poor, to the extent that the amount of investment to bring it up to the standards of it's neighbours could not be sustained, EVEN if there was an upturn in demand.
Putting it another way then there would be a requirement of between 5 & 10 years at least, of progressive expansion to necessarily be funded, with very little guarantee of any return on investment at all.
It's always been the land and the benefits of non aviation development that have kept the airport in operation.
At such time as the opportunity to separate the two activities arises, then the decision to close or dispose of the loss making aviation activities will become a no brainer !