The stock market and investments are
pretty much purely motivated by profit and greed (again, that
important distinction) which leads to companies having to answer to their shareholders every quarter, kowtowing to the already rich for fear that they'll sell their stocks and tank their precious NASDAQ rating.
Venkat at Spam Notes has a
pretty good breakdown of the court's ruling (which links to an expanded summary at the Technology & Marketing Law Blog), including the
important distinction between information which is «publicly available,» and that which isn't.