This film is not about corporate scandal, suspense or mystery; all those elements were simply the vehicle to get to the point: Death & how one deals with inevitable death. The story is extremely contrived and overly elaborate, which became dull and frustrating because every single character, item or action is just a device to metaphor.
At the end, the plot really isn't important nor the characters because the film intentionally presents every one as a wooden puppet without the slightest emotion or expression (The golden rule of filming art: do not smile, remain expressionless, and add bleak).
It ends as you expect it to: The same death metaphor and the same dreadful indictment against the capitalistic brutalities in every other film.