Some industries need scale, but I think we'd be better off with more, smaller, decentralized businesses. Industrial as well as agricultural -- not in all cases, of course, but in many cases. The really big companies shop the world for the cheapest resources and the cheapest labor. That's great for the stockholders, but for the national economy it is not so good because it means that jobs leave our shores and much financial activity takes place outside our borders.
Small businesses are the key to a national economy, and I think Obama works hard to punish such businesses.
Some industries need scale, but I think we'd be better off with more, smaller, decentralized businesses. During WW II, when Allied bombers tried to destroy Germany's industrial base, the opposite happened. The people worked even harder, more tenaciously, and production increased.