I know of someone who, during the pandemic, noticed a certain homeless encampment that regularly had $8K bikes lying around. Because a homeless person would certainly possess a six-month-old carbon World Cup race bike.

The person went to the camp regularly for a while, with a baseball bat, and retrieved bikes. They had 5 in the garage at one point. Doing so was more hassle, though, once they were in possession, than just letting people with such bikes file insurance claims and what-not.