Bannon’s basic argument, as he has outlined it to people who’ve spoken with him, is that Facebook and Google have become effectively a necessity in contemporary life. Indeed, there may be something about an online social network or a search engine that lends itself to becoming a natural monopoly, much like a cable company, a water and sewer system, or a railroad. The sources recounted the conversations on the condition of anonymity because they were not authorized to give the accounts on record, and could face repercussions for doing so.
Regulating a company as a utility does not mean that the government controls it, but rather that it is much more tightly regulated in what it is able to do and prices it is able to charge. And it doesn’t mean every element of the company would be regulated in that way. For Google — which now calls itself Alphabet and has already conveniently broken itself up into discrete elements — it may only be the search function that would be regulated like a utility.