Corporations are not Immortal. They are not living beings. They do not have free will. By calling a company immortal one further pollutes the dialog.

They are a logical / legal construction, and it makes no sense to call them mortal or immortal. By calling them immortal you are implicitly inferring that they actually make decisions and have actions; they don't. Agents of the company work within the constructs of the law on behalf of the company's directors. The company's directorship management makes the decisions.