Why would the 'thief' keep the phone? In the article it says that this happens regulary. Well but he BOUGHT a stolen phone. Yes but did he know it? Years ago I

Why would the 'thief' keep the phone? In the article it says that this happens regulary. Well but he BOUGHT a stolen phone. Yes but did he know it? Years ago I bought some used hardware from one of my neighbours. It did not pay the full price but it was still far from cheap. About 2 weeks later he wanted it all back because he had been cought on camera stealing it at work and his boss would not press charges if he brought it back.