I don't think Thompson had any intent on pulling out of HUY.
I feel Thompson are maybe playing the 'foothold' self-preservation game at HUY. If a low cost showed an interest in HUY, then I think you might see Thompson or a Thompson subsidiary increase the activity there.
As it stands now I think you'll find Thompson are playing the waiting game at HUY. If it doesn't feel threatened then it has no need to increase destinations, particularly as DSA is seemingly their pet project and most new routes are going from there.
I have to agree with you. No doubt if a low cost airline came to HUY or one of the other big tour operators expanded at HUY they would increase services.
Thomson will want to keep a large presence in the area. If there was expansion out of HUY by airlines/tour operators to destinations they serve from DSA and they did not have HUY operations anymore they couldnt compete as well out of DSA than they could if they still had a HUY operation.
It makes sense for them to keep operations out of HUY
In my opinion HUY would never see Thomson Fly in its scheduled form.