Wiktionary
nonviability
n. The state or condition of being nonviable; impracticality.
Usage examples of "nonviability".
But in view of the gross difficulties - lack of shipping to transport eleven million people, enemy control of the seas, stupendous cost, offense to Vichy France whose collaboration we were seeking, and nonviability of this wild tropical island for Europeans -it is hard to say how serious this project was.