Well, all of these accounts should be limited to 50:1 leverage. At 500:1, the odds of bombing out an account on 1 bad trade are really, really high. That might have something to do with it.
Edit: I don't want to run all of the numbers, but it looks around 1/3rd of total accounts are profitable. So it might be said "go learn to play poker, it's probably more profitable" for most people.
Still, 1 in 3 means it's quite doable, if you put in the work. Though I'd wager that most of those profitable accounts are the "side accounts" of other asset traders. No reason not to make some side money when you're a competent trader.