Here's why:
* Flag Ownership: Once a player finds a flag in the Underground, it becomes permanently theirs. They can't lose it or be forced to give it up.
* Unique Flags: Each flag is unique, meaning there are multiple copies of each flag scattered around the Underground.
* Flag Trading: While you can't steal flags, you can trade them with other players. If your friend wants to give you a flag, they can simply trade it to you.
So, if your friend has a flag you want, you'll have to find a different copy of that flag in the Underground or try to trade for it with your friend.