It was a vision to give South Korea a stock market that reflected its true economic dynamism, by shedding regulatory taboos and encouraging bolder bets – instead, it created an investor trauma that could take years to shake.The 30 per cent decline in the Kospi benchmark since its June 19 peak has hurt President Lee Jae Myung’s government politically and turned the spotlight on an economic system that drove retail investors into poorly understood leveraged products.It has also raised...