If my research suggests it can happen in 5 or 10 years, it is not immoral for me to have a patent on it that can be licensed to a party that can add the special

If my research suggests it can happen in 5 or 10 years, it is not immoral for me to have a patent on it that can be licensed to a party that can add the special sauce that makes it work. Why would my research suddenly become public domain just because I had the idea but technology hadn't caught up yet, even though my research suggested that it would catch up?