Yes HIA do lose money on all their airports. The bulk of all the HIA airports are small island airports which will constantly require funding. Inverness will be in profit shortly once the PFI terminal saga is finished.
There is demand for an airport in Dundee, maybe it needs looked into about extending the runway for 737's then more airlines would be attracted. Question is does the benefit outweigh the cost ?
Dundee has the facilities in place to be a good regional airport, and anyway it must be in one of the best & beautiful locations around !!