Sorry guys, in the official reading there is no explanation of how OTM put WWR may become much bigger than ITM put. I think there might be the case regarding the option premium that increases WWR as well. This is the case of CRASHAFOBIA, where investors expects large drop in the specific market, so as to hedge downside risk they buy OTM put. Consequently, as demand for OTM put increases, the premium paid for OTM put increases as well. This simple demand/supply rule. Therefore, it might be the case that the premium for OTM put is higher than ITM put. However, my answer was ITM put on oil producer!