This is by no means a negative news. The achievement is very similar to have scaled Mount Everest successfully which is basically a test of stamina, patience, perseverance,etc. but clearly a matter of ingenuity in this case. I think these brothers should pursue other technology stuff that are financially viable based on where they plan to live next. I don't see Trailok Helicopters ruling the air-traffic around the SAARC nations in the near future.