So it seems strange to me that each child would cost ~$15/hr -- the full cost of a single low-skill resource, 1:1 with children; You're not seeing the scalability of groups kick in. Unless there's some overhead per-child I don't understand, it seems clear this isn't simply supply/demand. There are many who want childcare, but there are many more who should be capable of supporting it.
There are also of course difference in popularity/quality which will contribute to a price gradient, but if you're seeing $2k/mo/child as your "basic daycare" costs, there's something up -- there's no inherent reason to the job that I can think of that would stop someone from undercutting that price point.
> Unless there's some overhead per-child I don't understand
I would start with liability costs, it must be massive for a professional daycare facility given how emotionally invested people are with their kids. Next would be redundancy of employees. Babies and toddlers transmit tons of germs, and so the adults around them would get sick too. Plus legally mandated ratios means there has to be adequate coverage for vacations, sick days, emergencies, turn over, etc.
And the population of working age people continues to decline, so I would not associate low skill with high supply of labor. I have never heard anyone tell their child to aspire to become a daycare employee.
I also would not describe managing multiple babies and toddlers properly as low skill, or at least not low effort. It seems to be very strenuous, and I do not think I could do it.
Some people might be coming from a very different perspective on what constitutes a good price.