It's a basic issue of democracy, and of course free market democracy, isn't it?

Democracy and markets both work best with informed players, and both are subverted when the powerful control information.

What I see as absurd (not here, but generally) is that people with a big belief in markets (current oil prices are purely supply/demand) get turned around, and defend what are clearly non-market and non-democratic events.

To me, it makes a great deal of sense for a market democracy to investigate things in open congressional hearings.  Not only does the goevernment learn, but each of us citizens learn right along with them.

(and of course if Iraq was discussed in early 2001, it takes this concern for democracy to a whole other level!)

P.S. - special concessions are made in US history for such meetings in wartime, but note that these were (AFAIK) peacetime meetings between a few industry and government powerplayers.  This strikes me as different than the proverbial round of golf, or hunting party.