Big difference this time is Trump will call them liars on live TV. Either they will quickly get religious or they will be laughing stock.
He can hurt these people in a number of ways. He can ban from attending White House briefings, functions, dinners, and AIR FORCE ONE, all the people proven to have been in the pocket of Hillary and the DNC. In the future, if he gets Congress to act, he can prohibit the cable companies from bundling programs people don’t want and thereby forcing them to subsidize schmutz outfits like CNN and MSNBC. They would cease to exist. A little pressure here, a little pressure there, and he can slowly strangle the biased liberal lying press.