So what...

People play a game and are stupid enough to value virtual objects in real money, so others fleece them. I don't see the problem.

"real estate" in any virtual world can be almost infinite nowadays -- only an idiot would pay for a small piece of infinity. "magic items" are just small pieces of code and are only rare because nobody's duplicated them -- once again, you're an idiot for paying for something that someone has contrived to be rare. Real-world objects, like the aforementioned Rolex, are made in limited quantity due to restrictions on materials and labour (OK, and a tiny amount of contrivance). A Rolex cannot be devalued by a fake -- unless one buys it as a status symbol, anyone who does has my sympathy.