LotR made GW a stupid amount of money for four and a half years and was always projected as a 5 year 'bubble' in revenue (which was pretty damned accurate). The problem came with a change in management etc after three years who looked at the previous sales for LotR and decided it should be made into a proper 'main range' product, and seemed to ignore the previous predictions. A year and a half later when sales began to plumit they were caught unawares.......
I doubt they'd be interested in this though, not a main stream enough product and stupidity burned them already.