Ben Landau-Taylor on why zombie companies exist only because the federal government refuses to let them die: "So much of this stuff is locked up in these zombie companies, which exist only because the federal government refuses to let them die." "The period of the most rapid industrial expansion and technological growth in human history from the middle of the 1800s to the middle of the 1900s was a period of much more frequent and much more severe economic depressions." "You did this huge…