As for stores not providing baby formula recipes, I'd imagine they're worried about liability, and there are of course many other sources for them. Really, due to the Federal government's WIC program which is half the market, its import restrictions, and messed up FDA regulation it should be on them.
I say messed up because the FDA demonstrably wasn't serious about dealing with the Abbott Labs plant problem or getting it fixed quickly based on the timeline starting with the whistle blower, while they make it very hard to get into the business. Or the USDA's problem due to their policy of forcing states to grant a WIC monopoly to one formula manufacturer resulted in three companies having almost all the total US market with Abbott having the largest share, at the same time US prices being double those of Europe. Which isn't as strict about food safety but still seems to do OK.
A serious country would have done something to mitigate the shortage after they closed down Abbot's huge factory before there were bare shelves for months and it became a political problem in an election year.