It's both caring less and how they consume it. Sports is the only thing holding the cable bundle together but the commitments these companies have made are greater than the revenues they are drawing from the content licenses they bought. That's why Bally went under, NBC got rid of NBCSN and ESPN is slashing their variable costs. Fans think they want a direct to consumer model, but that's just going to substantially jack up prices for those who still watch and harm the future prospects even more.
Disney had a real opportunity to create a one-stop shop for college sports that they could have packaged onto a direct to consumer platform, but they failed to get the Big Ten, which is necessary top tier content to get a program like that to work.