Disagree. The main demographic for such movies is young boys and young men. They cannot live vicariously through the exploits of some "Mary Sue" Uber-Female-Warrior-Princess.
They have as much affinity for such a person as they do for a male ballerina.
If it does anything more than flop, it will be due solely to the popularity of Marvel's other successful franchises.
“The main demographic for such movies is young boys and young men. “
That is undoubtedly true but, as to whether or not the movie does well, define well. It certainly won’t get Black Panther, Avengers or Iron Man numbers. To me doing well would be to exceed the box office Wonder Woman got. That would be considered a hit.