My samsung television has the same features it had when I bought it 2 years ago. If I want a 3D tv I have to buy a new one. My car wont get VW's newest engine and they only do firmware upgrades if they find a bug, not to add new features. So I don't really see your point at all.
The harley catalog is full of parts for old 90s/early 00s bikes. New parts are still coming out for those. I expect my '10 to have parts and "upgrades" for a looooooooooooooong time.