After 13 years, the manufacturer would owe nothing on this, this side of the affair is over, the ship departed long time ago.
What you can do is to check how other people with sagging visors cope with it.
YouTube is a good place to search.
Some of them are quite inventive and solutions I’ve seen range from gluing velcro to the roof liner to attaching small/flat magnets.
I ended up spending $45 to buy a brand new visor for my 15-years old Toyota Prius… probably will last longer then the rest of the car anyways