Whether Intuit has a legal right to make this change would be up to a court to decide based on a totality of issues starting with the user end license by which we all use the software. From Intuit's perspective they are assering that right leaving it to another to bring a challenge in court. Of course they rely on the proposition that very few of use have the time or resources to take them on in court. A class action might be possible. However, it would be up to a user to convince a law firm that it would be worth their time to form a class by advertizing for others to join in to bring a class action lawsuit. That's a pretty tall order considering that most class action are brought because there is the possibility of a large dollar settlement.