Predicting that transmission of TV will move to the Internet eventually, Cablevision Systems Corp. Chief Executive James Dolan says "there could come a day" when his company stops offering television service, making broadband its primary offering.

His comments may be the first public acknowledgment by a cable CEO of the possibility of such a shift, long speculated about by analysts. It comes amid growing tensions between cable operators and channel owners over rising programming costs, highlighted Friday night when...