Even without robbing people, video games are often heavily oriented around plundering abandoned dungeons. Not a lot of those in the real world. Heck, they don't even make sense in game. If there's dungeons full of gold, surely they'd be plundered to death by now? A couple of draegr aren't gonna keep people away from life changing wealth.

For games with no combat, the economy is usually just hyper exaggerated. Like Stardew Valley. You can spend an in-game month or two farming by hand with no automation and you'll make enough money to double the size of your house.