Not sure how up to date this is, but synthetic fibers are the #1 source of micro plastics, followed by car tires and city dust. Car tires are absolutely a contributor and we should cut our reliance on personal transportation for more reasons than just micro plastics. In addition, we need to move away from polyester, nylon and a slew of other materials.

Most household furnishings used to be made of natural fibers. These days carpets, couch covers and filling, curtains, clothing, etc are often derived from a petrochemical. I suspect oil companies will continue to pivot into these areas to continue as we very slowly ween ourselves of gasoline.