In this book, Lessig does a great job explaining why the Internet became what it is (or at least what it was in 1999 or 2000). Ultimately the success of the Internet resulted from the fact that no one was in control... But his most important message is that corporate interests don't necessary like what it is, and are using their considerable powers to change it into something more useful to them. This isn't because these companies are evil - their approach is completely rational and legitimate. However, their interests and the interests of the public probably don't coincide here.
The only way to ensure that future control and/or regulation properly balances public and corporate interests is to have an informed public. Professor Lessig's book is a great start.