I've no idea why anyone would bother scalping FX. Why not just trade currency futures on the CME? 100% transparent and no real 'spread' like FX or stocks.
Well, I think it depends on the situations and laws in each country, and the monitoring institutes of brokers also matters. Some can ensure that your capital will not be used in other ways and help you to prevent 'The Black Swan'. However, not every institute protects customers' right and money so much. There are many frauds and people losing money by being duped in this market. Thus, the governments need to do something to protect their own people, but sometimes the foreigners not included. So we need to recognize the institute we choose and rely on them.
Discipline rules, not emotions.