I agree entirely.This is unfair. WotC made a mistake in the original character builder in allowing the entire 4E rule set available for a pittance. While it was a great deal for value seekers (like myself), it was an unsustainable model. I think, if we are honest, we understood that the original CB model was not going to last.
The other route that CB could have gone is micro-transactions. To get book X for the CB, you'd have to spend a certain amount. Once purchased, you'd have it forever. Under this model, CB could have remained a desktop application.
Either way, the changes being made to CB are done to protect WotC's intellectual property. There is a value to the rule set and they can't continue to give it away for next to nothing.
I have always disliked web-based applications like this new one, mostly because it operates on the principle that you have online access everywhere you game, but I understand that they needed to make a choice between convenient for all users and losing a certain amount of money on piracy, and convenient for MOST users and not losing any at all.
I live in a country where piracy is rampant, so to be honest, I have take some sadistic pleasure knowing that players will have to either pony up or build their characters by hand. People who study the rules through the Character Builder first and the book second (if at all) will have to start learning the intricacies of the game's math.
That said, I still consider the DDI subscription worthwhile at this point, since they are doing the updates they have always promised they would. Sure, there're delays but even without hands-on experience I can already tell that this new app is simply much cleaner than the old one and doesn't run like molasses dripping off of paper on a cold January day and to that end, this new version of the CharBuilder is probably a 'technical' improvement that allows them to clean house on the code, even if it isn't an improvement in the direction i'd like.