California has required child:staff ratios for childcare. Under 1 year is 3:1, age 1-2 is 4:1, age 3 is 7:1, and ages 4-5 is 8:1.

Our childcare center is non-profit. It’s about $1800/month for infants and $1300/month for 3-4 year olds. They cover all the food and diapers, and they do the laundry (sheets). The teachers are paid poorly. The government pays nothing. Anyway I agree with you, for infants it makes sense for the cost to be about the same as renting a small place.