Most of us remember the US women's soccer run several years ago, winning the world cup, etc. Did that produce a pro soccer league in America for women? Nope. Has the sport exploded? Nope.
The thing with people, some love the sport - whatever it is, and will watch no matter what. But that's a small percentage. The bulk of people are fringe fans, no matter what they say. Yes, they may have been dialed into Iowa basketball this year and watch most of Clark's games, but it won't last.
Largely, Americans do not like women's team sports. It just doesn't have the same appeal as men's sports. Heck the major growth in men's sports are female fans. Women like to watch men play sports, it's been this way since the first sport was developed. Women's basketball has changed drastically over the last 20 years, but there is still a perception that many female basketball players are lesbians. And while that's largely accepted in a general sense, it doesn't mean everyone is going to plunk down good money to support it. It's just never going to be accepted as equal to men, and that just ticks so many people off. Instead of just being happy with progress, they want more.
Like the US women's soccer, I'm safe in saying you'll never see the popularity of women's soccer more than it was for that group. Our friend Megan Rapino shot her mouth off a few years back and drove a huge wedge between a fan base who just like them for soccer. Folks that stragety doeesn't work, fair or not.
Also, the other elephant in the room is that the NBA is too "black" for many Americans and that's likely true. And this is why the WNBA will not likely get off the ground. Yes, Clark will have a nice push of notariety for the league, but when she turns into a good but not great player in that league, it will dry up. Sue Bird, (white) graduated from UConn many years ago, played in the WNBA and is one of the league's most known players, unless you really follow women's basketball, you may not even recogize her. Just over the last few years, Kelsey Plum and Sabrina Ionescu are two of the better known white players to come into the league and again, unless you follow the league, you don't even know what teams they are on.