Yes, it's a very tough market, but from where I sit, nearly half the industry will have to retire in the next 2-5 years as the industry is top heavy with senior captains. There's plenty of work around even now.
As for "some people will do anything to prop up their training business" - the charity isn't a training organisation.
As mentioned before, all the candidates are fully aware of the situation, but they have the spirit that the British Army is made of. I don't think that situation is likely to put them off.
Phil