Professional sports is a business. If the business doesn't make money, it stops operating. That is the type of economy that we live in, there's very few businesses in North America that get bankrolled. There's a laundry list of minor league hockey teams that have failed in the last 2 decades alone because they weren't financially viable. Women's hockey and women's sports shouldn't be any different unless they take the path of the WBNA and lose well over $10,000,000 with abysmal ratings every year despite free publicity, subsidized operations, and prime airtime.
The market determines what players get paid. Football is the most popular sport in America and the NFL is the most popular league, hence why players like Odell Beckham Jr. got a $95 million contract to put butts in seats and eyes on TVs. NHL players don't make that much partially because of the cap but also because anyone who's ever taken Economics 101 tells you that if there's no demand for the service, the price is going to drop. Why would a team pay $15 million for Jake Gardiner when his worth clearly isn't nearly that much. Don't see why women's sports, and in this case women's hockey, should be any different.