+1
Apple do not want people to understand internal bits of iPad because it will hurt their commercial interest.
The most powerful outcome of jailbreak is access to iPad's filesystem. It is nothing but Unix (a Debian flavour to be precise). Once you become a root user and know how to use a Unix computer, you can then
* figure out Apple did not invent a magical device, which is bad for their marketing.
* you understand the Geniuses in Apple Genius bar not so intelligent after all.
* you discover that Apple OS is not so virus proof as they want you to believe (the jailbreakme site uses an exploit in iOS which now Apple has patched)
* you can install cracked ipa files without buying from appstore which hurts their revenue and affects the appstore ecosystem.
* you can use the iPad as replacement of laptop which may in turn encourage you not to buy orver priced Macbook - again revenue loss for Apple
Technology savvy users are not in Apple's target demography. Apple loves fashion conscious and technophobes because it is easiest to fool them. So any jailbreaker is despicable person in Apple's world.