I don't buy it. In the case of CL or the other companies mentioned (Netflix and LinkedIn), calling any of them communication tools is not really close to an apt description/characterization.

If we characterize them as communication tools, we are using a pretty loose definition. Moreover, inviting regulators (via their involvement in some sort of monopoly breakdown) into the proverbial henhouse is a nice mix of anti-free enterprise, anti-entrepreneurship and misguided/naive.