For what its worth, the Economist recently wrote about how universal child care can harm children, citing a study from Quebec.
> The trio published their first study in 2005, and the results were damning. Shifting to universal child care appeared to lead to a rise in aggression, anxiety and hyperactivity among Quebecer children, as well as a fall in motor and social skills. The effects were large: anxiety rates doubled; roughly a third more kids were reported to be hyperactive. Indeed, the difference in hyperactivity rates was larger than is typically reported between boys and girls.
They basically make the case that childcare is extremely difficult and requires a lot of attentive care, which is hard to scale up in a universal way.
> The trio published their first study in 2005, and the results were damning. Shifting to universal child care appeared to lead to a rise in aggression, anxiety and hyperactivity among Quebecer children, as well as a fall in motor and social skills. The effects were large: anxiety rates doubled; roughly a third more kids were reported to be hyperactive. Indeed, the difference in hyperactivity rates was larger than is typically reported between boys and girls.
They basically make the case that childcare is extremely difficult and requires a lot of attentive care, which is hard to scale up in a universal way.
[1] https://archive.is/ScFRX