First world problems. We are looking to buy a service from a service provider that has a business model. That business model is predicated on making money so they can continue to offer this service. Nowhere has W/B ever said that they were a not-for-profit. They do offer local discounts and early season opportunities that are less expensive (but certainly not cheap) for locals and families. They also further that with a 10% discount on family purchases on pass products (at least one parent and two kids) But it still costs money (lots) of money for families to commit to the bike park. But it's a matter of choice that you and your wallet can make. I find it ok value for what the kids get on a $100(ish) day in terms of care, teaching, and food. You're also buying insurance and risk mitigation and on-hand first aid care and attendees.
The beauty of mountain biking (or any kind of riding) is that once equipment is at hand, it's a free sport (with the exception of trail maintenance group memberships, of course) that doesn't keep sticking a hand in your pocket like hockey or others where you MUST have the facility access and coordinating organisation to play.
You may LIKE to ride W/B, but you don't NEED to ride W/B. If you like DH riding and don't like to climb (or want to make it easier for your kids to start), there's tons of freely accessible shuttleable trails between Squamish and Pemberton that will fit the bill. Several shuttle laps with the groms or friends will be much less $$$ than 3 or 4 day-passes at W/B. If you don't mind pedaling, I don't need to remind anyone here of the number of trails available in the same corridor of a variety of skill levels built, funded, and maintaiined by the local societies and muni's that are supported through donations and municipal taxes. All available for Free and mostly 24/7. As a bonus, these trails have less users, less aggro, a better feeling of wilderness, and are often significantly less beat on than bike park trails (at least per maintenance hour). The down side, is you have to cover your own risk management.
I agree it's expensive, but I think we need to remember it's a market-based luxury service with a free alternative.
Have at me.