I'm also a left-leaning liberal -- in most areas -- but the value of the post was that it attempted to elucidate the links between the persistent corporatism of our society and the fact that the corporatists truly did intend at one time to take over the government.
I have no doubt that they would (and in many ways, already have, through direct purchase) attempt to do the same again.
All in all, the piece could use some more research and fewer ideas all jumbled together, but it rebuts pretty well the too-rosy view of corporations as beneficent angels that all too many here seem to have.
And also, I've had a problem lately as well with the attempted historical revisionism towards Nazism, and have been wondering what's responsible for this as well.
As for being intellectually interesting, I think that fits that particular criterion for HN pretty well.