Republicans realized that internet giants are now in charge of determining what is true or false in the world but are run by a bunch of teenagers that are probably liberal hippies and cable companies are run by reliable Republican megadonors so lets give cable companies the ability to extort rents from those internet companies and hobble them to eliminate that threat.
There is no doubt both parties are influenced by the money given to them, but maybe Democrats got more money because they needed to be moved farther from their natural position (toward that which the telecoms wanted).