So why do we need more of it?
"Pre-school" is a fancy word for group babysitting. If government provides it, though, it is union jobs. Suddenly, babysitters are converted into "educators." That means union dues, and votes.
Mrs. B. and I are also "experts in pre-school education." We spent enough years providing it, for free, to our clan. It worked out just fine. We have nothing against group baby-sitting, which is fine too.