Selling Market Research Slimily

One of my current endeavors has drawn me into the bizarre world of "corporate intelligence".  This basically means information about other companies that you can use to understand your competition and find partnerships.  As I seek to understand this strange and dangerous new land, I've been spending a fair amount of time exploring websites like http://www.biomedtracker.com/ and within the confines of such websites I occasionally see tantalizing links like this:

These wonderful images get me all excited - "I will finally learn of the magical secrets held beneath! " - but then they invariably lead to something like this:

But I don't want to contact Bobbi Sue Richardson!  I just want to learn what your product actually is!  Why must you torture me so?  Why can't you be more like the folks who are doing so well at 37signals who "gasp!" allow me to view their product demo videos for things like basecamp with the click of a button.

While these walls frustrate me, they also fascinate me.  Why all the cloak and daggers?  There must be a reason..  Any ideas?