[evgen]

It's not that crazy if you think about it. We have 50 different sets of state contract law and precedence to deal with (unlike your 13 superior courts to watch) and a larger amount of interstate commerce and contracts to be handled. Compounding the problem is that fact that state laws regarding contracts can vary quite widely. While some companies may wish to restrict jurisdiction to states that have a pro-business bias this is less of a factor than you might think (companies sue each other far more often than consumers sue companies) and what most companies are looking for is a single standard to use for the contract. No one wants to learn the hard way that some state changed a law six months ago which completely hoses you for liability or contract enforcement and if a contract could not specify a jurisdiction then companies would be forced to stay up to date on new legal precedents and new legislative efforts in all fifty states.

You can try to change the jurisdiction, but it is hard to do this for a very specific reason.