DislikedI'm always amazed that the public is crazy enough to take on 400:1.Ignored
You, FS, and EFX-guy (particularly as he is involved in a brokerage) and anyone else feel free to correct me if I'm wrong, I haven't spent enough time looking at the actual background of how brokers work.
But in general, I look at this as a broker will close all trades on a client if they cross their leverage limits, and as long as there is money in the account when the trades are closed, it's the client that loses, not the broker (which is as it should be). But in a really fast moving market, it's possible that the broker winds up on-the-hook once a trade goes so sour that that the clients funds hit 0; in markets similar to the Dow in 87 (where no one will take on the contrary side) it seems fully possible that brokers may have to accept significant losses.
That's where the capitalization is important - it gives the broker time to clear bad trades. But without this, if enough trades go south the broker collapses, in which case while segregated client funds are ok, pooled funds are not.
Of course, from the broker's POV, it doesn't really matter, if they have set up their company correctly. If so the pricipals can extract hefty paychecks while things are safe & running smoothly, and walk away if/when things collapse, with little liability. One of those moral hazard things...Perhaps if the appropriate authorites set in a rule where personal liability on the part of the principals scaled directly with the leverage (say the maximum allowed leverage divided by 50 to get the number of years gain regulators could claw back in the case of a collapse) it might be a little safer