Bring the exploding whale video into a thread, expect an Oregonian. That's the rules, and I'm here to make sure that no good deed goes unpunished.
Size of league matters. Losing one team in a 6-team league is an alarm bell to potential owners and sponsors. I have followed a soccer team in a 5-team league before, that league just about failed before the failure of the old Canadian Soccer League allowed a merger, and then THAT league kind of got buried within what is now United Soccer Leagues.
Please to recall that there were two failed leagues before the current National Women's Soccer League. WUSA tried to work in major markets (and sometimes using large stadia, not always), and burned through their 5-year funding plan in year one. While it did not try to move franchises around and held stable, it lasted 3 years.
WPS arrived 6 years after WUSA failed. They tried being more economical, but that meant small stadia people generally couldn't find in larger markets, no promotion, and in this case a few franchises came and went. Three and done, as well.
So NWSL is about to embark on season 8. Yes, Boston didn't last that long, Sky Blue is only now finally playing in a place some people know (Red Bull Arena) after playing at Rutgers for so long. Kansas City became Utah. But guess what allowed this length of time.
Portland Thorns. Not the largest market, underserved... but had a convergence of factors that made things work. It has been admitted that the Thorns spread money out to keep the league solvent. It's the highest average women's professional team on the planet. It's a market with sensitivity to women's issues, a successful women's college soccer program, an active men's team with quite the reputation, and a facility that isn't NFL or major college.
I was going to make a little diatribe about how this confluence makes me think that the chosen region where NWHL is situated is the problem, that placing the league in the western US (as opposed to Calgary & Edmonton) would help. Eh, maybe, maybe not. The larger point is that nuking the Whale isn't nearly as important as finding your Portland.