When I'm visiting developing countries, I'm often in awe of the increased social activity and wondering why we don't have that in the western world anymore. One thing I think about is the cost increase like this.

Baumol's cost disease often comes to mind - in my (might be wrong) application of it - western society simply has had too much productivity and efficiency improvements. You can make more money as a software developer or as an investment banker because those jobs have gotten more efficient and have higher payouts to employers who want the best employees.

There can't be efficiency improvements in efficiency for child care, so the only way to have people want to become child care workers is to pay a competitive salary, so the efficiency increases in the other unrelated fields directly increase the cost of child care.

Developing countries don't have this problem and domestic labor and child care are still cheap.