Because this isn't CSI; it's real life. Tests are grueling and take time, and many end in failure. That we've come this far and are still conducting trials and new phases puts CUR at the forefront. If you have no patience, don't invest in stocks like this.
This company is one of those cited by Motley Fool as the "future" of video streaming and other tech advances. Why is there little to no interest in it? I'm on the sidelines for now, but if I come into some cash, this would be one I would look closely at.