In other words, it was bound to fail...
In another topic (I can't find it back), there was a nice explanation on how airlines choose their destinations. It did mention WOW opening a flight to Dallas and the competition ( Delta and American I think) immediately following suit. One factor they didn't mention though was the lack of connections on the US side for WOW.
P.S. How many doomed airlines have been launched merely to satisfy a personal ego?