People def make replacements themselves. I've seen it done tons. Have a friend that makes some extra money doing it actually, but he's an A&P and uses approved materials. Nothing stops an owner from taking the old carpet to an upholstery place and having them duplicate it for cheap with non-approved stuff.
Anyhow, not too worried about it since it's not to much to replace it if need be. Just one of those things I'd like to know but never will w/o doing the burn test myself
