If and when film sales go back to that level, Kodak (or whoever purchased the technology using it with whichever brand name) might easily think about producing Kodachrome again. In 2006 Kodachrome was still a viable product and it would be some sort of a "flagship" product for Kodak, a bit like Porsche continues to sell their 911-family cars: even though they are not the latest in technology, there still is a market for "retro" technology provided it is well realized. Values like "tradition" and "history" do have a meaning, and Kodachrome might be the 911 (or the Morgan) of the future slide market.
The first condition to become true is that the market bounces back to where it was some 6 years ago. Not easy for sure, but not impossible either.