The share of Americans who say they watch television via cable or satellite has plunged from 76% in 2015 to 56% this year, according to a new survey of U.S. adults. Some 71% of those who do not use cable or satellite services say it’s because they can access the content they want online, while 69% say the cost of cable and satellite services is too high, and 45% say they do not often watch TV.