They're still in foil in the UK.

Chocolate bars used to be folded aluminium foil and paper. Some still use those materials but now they weld (crimp with enough pressure?) the foil which is probably better for the product but OTOH it's slightly annoying because you have too little foil to re-wrap a bar you only took a little bit off of.

We badly need to return to this

I think they're still wrapped in foil in Australia, though I haven't had any in a few years. I don't think I've ever seen any eggs come wrapped in plastic, although the bags the foil eggs are in are plastic

Where are they coming in plastic? I still see them just wrapped in foil.

Come to think of it, nowadays you can still buy certain things in bulk, but a packaged option exists too. You could carefully choose and weigh the individual potatoes you like, or you could just pick up a bag that was prepared earlier in some potato factory. The same things applies to many fruits and vegetables too.

I'm 38 and had to think real hard to remember when they had the foil wrapper and paper sleeve.