You are right....The notion that corporations (which is a group of individuals together to achieve a particular objective,most commonly money) have the same rights as individuals(objective:happiness) is the root of this mess!....But I dont know if such an old legal precedent like Dartmouth vs Woodward can be changed!...Not that people havent tried.....http://movetoamend.org/!
This should really be the aim of the OWS movement!
The notion of corporations as people is fine with me as a legal fiction (the original intent). The major advance in the Dartmouth case was that contracts made by corporations were valid, and that the state didn't have the right to arbitrarily dissolve them. I wouldn't want that particular aspect to be any other way.
More important is the conflation of artificial persons and actual people. In light of my previous concept of a corporation as an entity that does whatever's legal, however amoral, to make a profit, it's silly to apply moral concepts such as "inalienable rights" to them.
This should really be the aim of the OWS movement!