Why Professional Corporation form?

A professional corporation (PC) formed with the intention of engages in one of the learned professions, as the law, as medicine, or as the architecture. Traditionally, the professional corporations (PC) were forbidden of engages in such professions because they lacked the human, the necessary personal qualifications to follow them. In the recent years nevertheless most of the states promulgated a professional corporation (PC) or an association act that allows the professional persons to practice in the form of business provided that all shareholders are members of the profession.