Arnold Kling presents a Jones-Minsky interpretation of why profits are high if aggregate demand is down.
I think it makes good sense. I've appreciated Kling's posting on the fairly well known work of Minsky and the less well known work of Jones.
I think another interpretation that integrates perfectly well with the Minsky-Jones interpretation is corporate liquidity preference. Roger Farmer has been emphasizing this point a lot lately, and stressing the relationship between corporate liquidity and hiring. I think I'm going to have to add Farmer's new book to the reading list.
I'm working on my personal statement for economics PhDs right now and a big part of that is sketching out research interests. I really want to look into the macroeconomics of gross labor flows - separation and hiring - which has been underemphasized relative to the macroeconomics of net labor flows (i.e. - increases or decreases in employment, unemployment, or the labor force). Minsky, Jones, and Farmer all seem very important to this. Minsky and Farmer especially provide a very Keynesian flavor to the question.
Farmer is also a Keynesian with serious doubts about fiscal policy, which piques my interest. Ya, I really oughta read the book and get a sense of his thinking on it.