How's this for some proposed legislation/regulation: Anyone who wants to use a share trading service has to first complete a one month "training period" where

How's this for some proposed legislation/regulation: Anyone who wants to use a share trading service has to first complete a one month "training period" where they use the service with virtual money only. The UI would be exactly the same, but you couldn't top-up or cash-out your balance. The catch, though, is that you "fail" this training period if you don't make a profit (or enough trades) during that month. You are also prevented from attempting another training period with that service (or any other service) for another 11 months. This would have the dual effect of locking out the large proportion of users who don't know what they are doing, and also preventing a sudden influx of users from taking advantage of (or falling victim to) some meme scheme that generates a lot of short-term media attention.