Complying with regulations, dietary restrictions, allergies, little special requests that all seem reasonable in isolation, replacing supplies, etc, etc. It's basically the opposite of a software business, it doesn't scale.
She could do better for herself by raising rates (she has parents coming to reserve spots pre-conception), but she can't bear the idea of pricing out hard working people.
There are some things that probably don't work as businesses, even with subsidies, and if we want another generation of kids we probably have to think outside the market box.
We have free school for older kids, and maybe we could just extend public schools to age zero, but what about subsidizing new parents to stay at home and actually bond as a family? Or cooperatives of parents to take care of each other's kids on a shift basis? It would be cool to see this kind of creative thinking.
Yes, they could raise their rates, but if they did, many parents would have had to go elsewhere. It was a balancing act to charge enough for the quality they wanted to provide while also being able to be affordable for the community they served. Most teachers were younger, and did not last very long (two years at most).
That's not obviously bad, but we should talk clear eyed about whether that's the right social contract to enter.
If support were to be given, I'd imagine you'd have to be very careful on how the laws were written.
Basically the subsidy doesn't really help parents, it just goes to the daycare's pockets (and subsequently, their landlord if they don't own their property).