Cablevision CEO James Dolan was speaking on a stage Wednesday with CEOs of most of the country's biggest cable companies, excepting Comcast, at an event at an industry trade show in Chicago. Comcast's $45 billion bid for Time Warner Cable recently fell apart because of regulators' concerns about the combined company's power over the Internet and the growing online video industry. The Comcast-Time Warner Cable deal would have created a national behemoth with about 30 percent of the country's video subscribers and more than half of its high-speed broadband customers.