If we banned plastics (gutting their lobbies affecting everything from taxes, laws/regulation, logistics, etc) we would have natural replacements in like 5 years & nobody would even think of the times before (except for environmental cleanup purposes).
They said you can't have water-tight bags from non-fossil fuel sauces, now they are everywhere. The paper industry just like developed see-through water-tight "paper" (the lil windows in envelopes & some packaging) bcs they didn't want to deal with the petrol industry.
The non-plastic drinking straws? Yeah, explain to me why they intentionally sux even tho we always had the materials for a seamless transition?
(Also, just in case an fyi - cotton, like wool, can be processed and woven if very much different ways which makes for basically divergent materials, it's a whole science. The mainstream stuff is mostly the same tho.)