I don’t think it can work. When I interned at a consumer product manufacturer they used 1/3rd recycled and 2/3rds new plastic. Recycled plastic is too low quality to pass QA. And they could only used recycled bottles.
Some stuff gets re-manufactured 5 or 6 times. The majority gets manufactured once and ends up in landfill.
Glass, metal and standardised sizes is really the only way forward.
Is a soda bottle a high-precision moulding that needs super-precise tolerances? And if so, are there ways to redesign this to reduce the constraints?
Fwiw they do need fairly tight tolerances otherwise the cap won’t seal and the product will leak or spoil.
Size tolerance, the way plastic flows through the molding equipment, temperature at which its blown, how much shit leeches into the beverage, how strong the resulting container is, all that factors in.
Plastics are a complex technology and people are optimizing what we can do with them as across every dimension much as possible
Capitalism can find a use for the low grade plastic, or a way to avoid producing stuff that needs high quality plastic.