They have a similar tax in UK and HK, 0.5% i think. It's even 1% in Ireland and the world hasn't stopped - Think it's only mostly for stocks, dunno how it works for stocks and options. One sure can't day trade with such a fee.
Sorry, it seems it is much less than I first wrote for hong Kong, from IB's website : Stamp Duty 0.1% (rounded up to the nearest 1.00) will be passed on for stock executions SFC Transaction Levy 0.003% will be passed on for stocks and warrants executions