Does reading news articles not benefit you? If not why continue reading?
Exactly. If I read a NYT article, and decide to invest in some company, then sell the stock, make a profit. Do I owe the NYT a percentage because I used knowledge I "read" from one of their articles? I "read", input, (into my brain neural net) where it mixed with other inputs.
I think the only consistent stance would be that yes, you do.
Not personally, but if I was training to be a journalist then yes.