"PET bottles on the Dutch market averaging 44% recycled PET content in 2023". Also, many other products: Fleece jackets are made out of bottles. That's up-cycling, afaik. And lots of packaging materials (bags, shampoo bottles, etc). If it is economical depends on many factors, and can be different in each country. Landfill may be cheap in the US, but extremely expensive in European countries, because there's no un-used land.

but yes, what can't be recycled is epoxy (also a plastic).