Why do we need the corporation? A corporation is nothing like a labor union... you're comparing apples and oranges.
The Case corporation employs 1,300+ people in my city. Considering there are only 40,000 people in my city I'd say that's a pretty significant contribution. The benefits and pay are unmatched for hundreds of miles in any direction for that type of work. They build 28 combines per day, every day, and ship them all over the world where they're used to FEED THE WORLD. There are 12 other businesses (many of which are corporations themselves ...albeit much smaller corporations, but they survive because Case survives) of varying sizes that do a lot of work for Case-IH (who subcontracts parts to be built outside the factory because they don't have the capacity to do it all themselves) which employ thousands more people and pay wages and bennies MUCH higher than they'd earn for working at Starbucks or Wal-Mart
Oh, and last year they donated $1,000,000 to the United Way. This year the goal is $1,200,000.
But yeah, screw them. They pull in five hundred million dollars a year selling 28 combines per day for $350,000 dollars a piece. (Roughly a 13.5% profit) Pure evil, I tell you.