Charter's proposed merger with Time Warner Cable and Bright House Networks will result in two companies -- Charter and Comcast -- controlling 70% of the high speed broadband connections in the U.S., Ars Technica reports. The deal would leave Charter with around 23% of subscribers who receive service at speeds of at least 25 Mbps (the FCC's current definition of broadband). Comcast would remain the largest Internet service provider, with around 47.6% of U.S. broadband connections at speeds of at least 25 Mbps, Ars Technica calculates.