When an investor waits for product development for several years and as a result the project disappears, this is a disaster.
It depends on the attitude of the investor to investments. An experienced investor is diversifying his investments. Loss of investition to one of the projects is inevitable and is not critical for such an investor.
In stock market it is nomal when projects is developing for 5 or 10 years. But cryptocurrency develop very quickly. Investors wants to see results as soon as possible.