If you want to earn money without trading forex, one method used to make millions is to open a brokerage, wait until you get enough money on deposit, then close the brokerage.
Repeat under a new name every year or two. Sadly, there's always a steady supply of people ready to throw money in without checking little details like regulation. Just be sure to have a flashy website, offer some bonuses, claim to have been in business for many years, and say you were voted the #1 broker at the Freedonia Forex Awards in 2010.