You say IB provides ZERO protection but
a: when you invest in US stocks, aren't your stocks at a US custodian - in this case IBLLC
b: you seem to be discounting their $6 billion in shareholder equity and consistent earnings which are retained on the balance sheet.
You're in HK, the probability of China strolling into port with an aircraft carrier is probably higher than what you're whinging about for over a year. Whoops, never mind they already did that. I would fathom you have greater things to worry about.
Lehman was much bigger than ibllc right before Lehman was gone.