Open Source Business Intelligence: Free or Bait?

I just finished some interesting reading on Open Source software in the Business Intelligence space.

http://www.ventanaresearch.com/oseabi/oseabi.aspx?id=1327

Ventana Research had conducted a survey and the results surprised me a bit-- Open Source BI is being taken seriously by enterprises.  Since the RedHat IPO (Aug. 99 if memory serves me) I have been expecting such adoption in the BI space but I targeted it out a decade. While not mentioned in Ventana's analysis my suspicion is that the adoption is gaining velocity and will hit early majority within three years.

So, I decided to check out Pentaho arguably the Open Source BI leader. The download was pretty straightforword. The install smooth with the exception of needed to reconfigure port 8080 (which I put IIS on after installing Ruby on Rails a few weeks ago) and the sample reports and analytics provided a good sense of the products capabilities.

Two things surprised me: One, the open source license was not a straight MPL (not a big deal but interesting) and two, the software was referred to as 'demo' software.  Having built many a demo  or two when I worked for SAP and knowing a few tricks of that trade....I have to wonder what isn't in the demo that is in the indemnified version?