My only comment at this stage is that rather like day traders...

My only comment at this stage is that rather like day traders shorters regard a time period of two years, as a very long period. I regard two years based on the info available as the length of time before the increasing sales from commercial sales becomes a flood .If they see it in the same light they would therefore see the next two years or the greater part of it as a chance to short trade

These are just my thoughts on why they continue and I would be interested if anyone has any other idea