Terrible idea. You keep it unified because then you have a single entity to regulate. The problem with Facebook does not stem from a lack of market competition

Terrible idea. You keep it unified because then you have a single entity to regulate. The problem with Facebook does not stem from a lack of market competition but rather its fundamental business model of allowing anyone to purchase ads. If we are concerned about Facebook being used as a vector through which bad actors try to influence elections - which we should be - then we keep it unified and regulate it so that ad purchasers must be vetted and approved, especially if the content of their ads relates to politics.