I don't doubt it is possible to design new components for R1 to accommodate Dragon, but I can understand why they would chose to put their efforts into the future of Red rather than it's past. If we carry all of our past baggage with us continually it will load us down and we become sluggish. Red needs to remain agile in order to stay on top, and that is in the best interest of all RedUsers. I hate to refer to the cornerstone of the company as "past baggage" because it implies a negative that doesn't really apply, but if Jim & Co. have to carry Red One around their necks for much longer it will certainly become a negative influence. Eyes forward people!
Sure it was an economic descision... not just economics of finance but also of manpower resources. The engineers and designers at Red undoubtedly have their hands full already and don't have time to dedicate to keeping R1 up to date.
Investments in legacy seldom pay off like futures do. ;-)