There is going to have to be a culture change in about 80 percent of the D-I women's programs. The fan interest exists in about 20% of the venues. It still has to be built elsewhere.
As far as the WNBA ... I don't know. That we will have to see about.
The best case scenario for the WNBA is Clark is out of this world, every bit as great as anyone imagined, and the team is, too, and the league's players are like "OK, she's amazing" and the league's coaches and GMs adjust roster management and play style accordingly. And the WNBA takes off.
But she could be really good - like top ten in the league good - and average, say, 18 points a game, and people who don't know anything about the WNBA don't know that 18 points a game is really, really good in a league built for size, physicality and defense. And then you'd have a "well, whose fault is it that she's just really good" kind of thing, and that wouldn't be good.