It's diametrically opposed to the business interests of the company. You don't fire paying customers!!
What they should consider doing is tightening up the firing logic (to make firings much more rapid), while also giving fired coaches 1-2 free seasons. That way, it would become pretty normal to get fired, good jobs would open up more often, and there would be a free gift to take the sting out. Would make the game better for everyone.