True, although kids are only of childcare age for a few years, so if all adults share the cost burden of childcare for everyone throughout their working lives rather than just paying for their own needs for a few years, the math works out a lot easier. (IE, childcare paid or subsidized by the government.)

The other piece of the puzzle though is that there need to be sufficient providers, which can't happen instantaneously. So you'd have to scale up such an initiative in a sensible way.