At China’s annual World Robot Conference (WRC) that kicked off on Wednesday, the hall was filled with humanoid robots wowing visitors with feats of dexterity: from playing table tennis to performing drum solos. These eye-catching displays have helped China’s robotics industry win global attention – and raise huge amounts of capital – over the past couple of years. But at this year’s summit, the overriding sentiment among executives, investors and policymakers was starkly pragmatic: the era of...