Imagine one of the European sailplane companies decided innovation was too expensive and reselling what they already make is the way forward and started lobbying EASA and the FAA that all their gliders over 20 years old were unsafe and should be grounded? Throw in some scare stories from mechanics that don't want to work on older gliders. Cause that is exactly what Allen and some of the parachute manufacturers have done. When your product hasn't changed in 50 years best thing you can do is get the gov't to ban and/or industry associations to denounce the old stuff.