If you think about it, the "productivity revolution" is only needed because of how expensive it is to run a childcare facility in a place where there are lots of children. If you lower the intensity with which a facility in a city needs to produce income to carry the cost of parking minimums and housing for its employees, then that would eliminate the problem too.

In-home childcare that resembles a hobby is called "parenting" and in the absence of a commercial option one half of a couple often ends up spending all of their time doing this until the child is of age to be placed in school. I think a lot of the problems our society has come from not valuing this or denigrating it as "hobby" work.