"But once it is widespread, it will be, and should be...".

Should be?

You have a long way to go before making a compelling argument for why the state should provide the degree of care for infants that you embrace.

You might just as well say "university should be free for all students, the way it is in some European countries".

That sort of statement is not compelling of anything.

And the easy rebuttal to your earlier statement is to propose that society would be best served by having only public schools and abolishing the religious schools (Catholic, Muslim, etc), a move that plenty of folks support.

How far would you get, though, arguing that society would be best served by abolishing the raising by families of their own infants, that all infants must be handed over to the state for raising in daycares by paid workers? People bristle at such a thought because it is over-reach: Daycares are an option that work well for some and not for others, and those who use them should pay.