Sorry, but what defines the domestic market in Hong Kong? Where does CX and KA stand to lose? Do you mean mainland China? What will prevent KA from matching fares with Jetstar HK? Or just flooding the market with seats? They fly similar equipment, A320 and A330, but have a much deeper pockets and a stronger revenue stream with onward connections and developed cargo markets. Jetstar HK is more likely to price stimulate the markets they fly to than pull much traffic off CX/KA. Over time, Jetstar could pose a threat if they grow to be a large presence, but for now there is little threat beyond what HKA & HKE already generate.