These major corporations could hire people who study politics as a science for a living, who are trained to teach it, and are about as objective as it gets. They know what they’re talking about, can explain the complexities, and won’t intentionally spin things (at least not nearly as often).
Instead, our largest, most influential television news companies choose to hire political operatives, with less knowledge, and greater incentive to lie. They’re poisoning our politics, because that’s supposedly what’s best for their profits.