VLM
I think the route and even the airline itself is set up predominately for business travellers. I think the theory was to connect the 3 ports. Certainly if you look at the prices they are charging you would have to be mad to fly them if you are using your own money. I would hazard a guess that 99% using the route are getting it on expenses with their company. They might be getting the yield despite the low take up with the high ticket prices though.