I wonder how much of the need for both of these industries would vanish if more families had one stay-at-home parent.

We send our daughter to a daycare that has a number of families so wealthy that one or both parents wouldn’t have to work. They still do daycare because many people want careers, and/or because they think the socialization and environment diversity is good for their kids.

Obviously you’re not going to meet the families that don’t use daycare … at daycare.

You're asking if ~35% of people currently working stop, would childcare and pet care as industries begin to disappear

I think, definitely. I also think there are several knock-on effects that might take the better part of a generation, if not two, to adjust.