You don’t need to ban plastics, you just regulate the people making things to have to ethically dispose of the waste generated by their products. They will pretty rapidly switch to something they can actually dispose of. The manufacturer needs to be responsible for the full life cycle of their products.
I mean if they have to dispose of it properly then they are either going to try it on with PFAS coated paper and realise there’s no way to get rid of it or they are going to find better alternatives. It hinges on real penalties, fines for companies, fines and jail time for CEO and wider C-suite for breaches.