Are you Steel thinking?

I just read somewhere that Japan’s biggest steelmaker and another Japanese steel company are set to merge together to become world’s second largest steelmaker. If you remember, arcelor-mittal – world’s largest steelmaker – came into existence from a similar super duper merger. What is this between steelmakers and this trend of such big ticket mergers? Do you have an answer to this? And like me, do you see arcelor-mittal and this would be Japanese company eventually becoming one? How much do you think they would be contributing to the global steel production if they become one?