Cable Line Inc. and McLaughlin Communications Inc. accuse Comcast Cable Communications of Pennsylvania Inc. of enticing them and other local operators to hire and train workers, add offices, borrow money for trucks and equipment - "only to abandon those firms once they had been induced to create the infrastructure necessary for Comcast's expansion," according to the lawsuit. The work was given to the larger firms Comcast favored "in order to monopolize the market," it contends.