I slightly disagree with this perspective. The biggest cause of losses that turn an account negative isn't the 'Death by 1000 Cuts' scenario that you outline but the market sell off events, such as what we saw back in Feb. From a broker's perspective that is when we see over leverage wreak its havoc.
About a decade ago the overseas frims that began being passported in were the firms who started offering ever increasing levels of leverage. FX went from 100 to 200 and ended up at 4-500x. Now the reason for this is that we brokers/bookmakers know that the more leverage you offer the quicker a client self destructs and all their money is booked quickly and efficiently to your balance sheet and you nip back onto Facebook, or wherever, to get the next gambler in with a bonus offer that can never be earned but encourages massively excess punting on hugely inflated leverage.
The reduction in leverage is long, long overdue. I'm of the view that it has gone too far and that key regulators will probably not be implementing ESMA's emergency rulings. ESMA will probably extend at the end of this 3 months for another but regulators are now seeing that the aggressive reduction has made it more dangerous for the smaller clients they are there to serve and protect as geographical borders are simply no longer relevant and clients can retain high and unsafe access to margins by migrating their account to Aus or the Marshall Islands or Timbuktoo.
The sensible margin levels for the industry are probably closer to where we were 10/15 years ago as those levels didn't destroy accounts (remember the hideous slippage that brokers had to resort to to nail competent traders, or the switching to manual or requoting etc?) back then competent traders were genuinely making solid returns. Especially CFD traders as that product attracted people who actually wanted to make profits rather than spread betting which has always attracted a very large contingent of random gamblers who are just punting for the excitement or thinking it was easy and just a case of following the trades of some random bloke on the internet.
Retail traders are terrible at risk management and what kills them is the draw-down periods because they are almost always running more risk than their return potential justifies. That's why you see traders with really good 55-70% winning trade rates still losing over the long term. Reducing leverage as well as forcing close-outs will have a huge benefit on this group of traders.
That makes an awful lot of sense to me. As a long-time spread-better I've always been very wary (and too scared to use) the maximum amount of leverage permitted. Almost any sensible appraisal of risk management shows that over-leverage will end in disaster even though there may well be moments of triumph en route!
It would seem that (though I have no access to hard evidence) many traders are under capitalised and therefore take the high leverage route to compensate – but the sums show this is disastrous (just get the old spreadsheet out and see for yourself). Shouldn't we be concentrating on making our "system" reliably profitable and then tailoring our risk accordingly? (As inferred by Morris 2001 above).
I spent a long time training myself to do this and I found the best way for me was to run a Micro account e.g. start-up capital £1000. This has many advantages:
(1) the most you can lose is £1K
(2) you have to make your system profitable or you will go broke
(3) you have to get your risk management in order or you will go broke
(4) there is little/no psychological pressure because the most you have at risk is £1K
(5) once you have a good system it can easily be scaled up gradually thereby acclimatising to the increased psychological pressures when dealing with larger amounts.
(6) I wouldn't even contemplate using real money until I could make a paper system work.
(6) although you may well have to go through numerous iterations to find a system that works satisfactorily, if you concentrate on risk management first and foremost you will always have some capital left to carry on.
The above philosophy has served me very well over the years and enables me to trade profitably and without undue stress. A good well-managed system will not make you a millionaire overnight but it will make you money. With such a system, if you want to make more money just add more capital while trading in the same way. And there's no point in trying to obtain more capital by increasing risk – just cut down your expenses in other areas and reallocate to trading.
All of the above I would imagine will be obvious to any successful trader but hopefully might be of use to anyone just starting out. I wish someone had told it to me years ago.
PS I trade US S&P 500 shares reasonably short term (0-10 days). Have no experience with FX or other exotic trading!