Carol isn't the only messenger in town, and Carol is not obligated to participate in communication they do not agree with. It's a weird position to insist otherwise.
In this example, if the anti-DDOS service providers were forced to charge their customers proportionally to the used resources, the market would have 20+ players as opposed to just a handful, and Cloudflare would instantly lose a considerable amount of paying customers by deciding to take sides.
Carol has a literal right to their "free speech" too and there is really no getting around that no matter how you slice it.
Otherwise, the group of elites that got on top during the current economic cycle gets a powerful tool for shaping the public opinion and avoiding any criticism, further entrenching themselves on the top. The result is the 3rd-world economy with a bunch of cronies engaging in rent-seeking, and everybody else living in poverty with no way up.