That's an American thing. By default, you can fire anyone at any time for no reason. Universities then overcompensate and give extensive protections for tenured faculty.
In Europe, it's more common that a professor has roughly the same job security as a teenager in their first real job. There are some exceptions due to academic freedom, but they are mostly about the substance of the work rather than the performance in it. And other independent professionals, such as doctors, lawyers, and civil engineers, often have similar exceptions.
In Europe, it's more common that a professor has roughly the same job security as a teenager in their first real job. There are some exceptions due to academic freedom, but they are mostly about the substance of the work rather than the performance in it. And other independent professionals, such as doctors, lawyers, and civil engineers, often have similar exceptions.