In the wake of news that Charter Communications is set to buy Time Warner Cable, battle lines appear to already be forming. Deadline.com reports that one key player, Comcast CEO Brian Roberts, has voiced support for the merger.

Roberts, whose own company’s recent attempt to acquire Time Warner Cable hit regulatory hurdles and a swarm of opposition, is quoted in the story saying, “This deal makes all the sense in the world. I would like to congratulate all the parties.”

But not everyone is on board. One of the early opponents of the Charter-TWC deal is S. Derek Turner, research director for the public interest group Free Press.

Deadline quotes Turner saying: “These potential mergers won’t make Charter as massive as a merged Comcast-Time Warner Cable would have been but they raise similar public interest concerns, and the FCC should apply the lessons learned in its prior review here.”

Turner adds: “The cable platform is quickly becoming America’s local monopoly broadband infrastructure. Charter will have a tough time making a credible argument that consolidating local monopoly power on a nationwide basis will benefit consumers.”