Virtual items are big business. Some people laugh at the idea of spending money for a bunch of numbers with no intrinsic value, which is weird, because money is a bunch of numbers with no intrinsic value. It's just that in the real world we need a medium to convert doing data entry into eating ramen, and in the virtual world we need to kill lich kings with flaming swords to forget about the first half of this sentence.
You can't claim that physical existence confers real value in a world with The Big Bang Theory bobbleheads. The resulting virtual item sales are pure profit for the video game developers. When your manufacturing process is copy-paste, it's even easier than printing money, because the latter involves spending on raw materials like paper. The problem is in how hard developers chase this money. It's the easiest way to make money while ruining something enjoyable since King Midas tried eating chocolate coins. And some developers have found amazing ways to screw over their players.