>I think that shitstorm is preferable to allowing brokers to manipulate asset prices to protect themselves.

I don't think that "biting off the nose to spite the face" is the approach I would prefer when it comes to my money. And, I think, a lot of people would agree with me this.

Also, the whole "protect themselves" line sounds like pure outrage without thinking about the actual consequences. If your brokerage doesn't "protect itself" and implodes, what do you think is gonna happen to the value of your assets sitting in that brokerage (as well as the assets of everyone else in that brokerage)?