It's also a little strange to talk about "reach," which is a hypothetical concept, and not actual market share. When the DoJ considers antitrust legislation aga

It's also a little strange to talk about "reach," which is a hypothetical concept, and not actual market share. When the DoJ considers antitrust legislation against a putative monopolist, it usually looks at the market share of the entity in question. Comcast will exploit this to the hilt, of course. There are a lot of "technical" grounds on which Comcast is not a monopolist, and it will argue those grounds aggressively if investigated.