Yeah, TCG cards get stolen a lot because of these reasons, but you missed a couple other critical ones:Dexterity said:But think about it, unlike most other potential theft items, They're not that heavy to carry, there's no annoying cables or anything for you to pickup, you literally just have to grab the box or binder of cards and leave. Also, Yugioh cards won't usually be reported.
1. Even if they're reported, the police may not take it seriously
2. It's a valuable good that is intentionally unmarked
3. They're easy to liquidate, often at the same places you steal them.
Since cards are interchangeable, there's nothing to stop thieves from swiping a bag at a Magic Grand Prix, selling the valuable cards (to a few different vendors for safety) and then leaving with the money with nobody the wiser and no way to track them down unless there was a security camera that happened to catch the act itself.