Some winners and losers from my perspective:
Loser: Echostar/Dish Network. Business decayed to the point that they tried to sell the business for $1 earlier this year and still couldn't seal the deal.
Loser: DirecTV. Got caught up in the ill-fated AT&T/Warner merger, when executives thought there was synergy between content production and distribution. There isn't much synergy there, at least not until you get to monopoly/duopoly scale (See: Canada's duopoly of Rogers and Bell)
Winner: 21st Century Fox. Fox disposed of its cable assets in 2017, very near the top of the market.
Winner: Nexstar. Perry Sook managing to buy Tribune probably was the best merger of the 2010s. The ad market in smaller markets is soft, and the sharp decline in satellite subscribers hurts more in small markets (where cable was less common).