I agree, but it is possible that they are not being sold for scrap.start locking up a few scrap dealers for receiving stolen property....dry up the market, decrease the thefts.
It is possible that repair shops buy them and when someone comes in to replace a stolen one, they get one of these stolen ones and are charged for a new one. How would you know? Would someone even check their car after? Would they know if it was a new one or a used one? It would not even have to be the right one for their car. If it could be shoehorned in, then who would know? There have been plenty of news stories/hidden camera stings of shops doing similar things, like charging for brake replacements and not doing the job, just showing someone used parts from another car.
Heck I posted in post #29 a car repair shop stating in their window that they buy them.