Here's why it would be a horrible idea for Netflix to tell us how many people are watching its shows, according to CEO Reed Hastings

Netflix has a love-hate relationship with traditional TV networks, who they both license shows from and compete with.

They are "frenemies," as Netflix's head of content Ted Sarandos puts it (he tells Fortune that CBS CEO Les Moonves taught him the word).

And one of the major points of contention between Netflix and networks is the fact that Netflix doesn't divulge ratings. Not even its stars, like Tina Fey, know how many people are watching their Netflix shows. FX CEO John Landgraf and others have railed against the practice as unfair. But don't expect Netflix to change any time soon.

Why is Netflix so secretive about data?

The obvious benefit for Netflix is that it gives the company more data on which shows are successful than the networks it is bidding against for new shows. But there is another reason that is inherently tied to Netflix's status as the industry's "frenemy."

Netflix CEO Reed Hastings explained it this way to Fortune:

"If I told you today that the shows on Netflix were watched at a dramatically higher rate than anything on basic premium or broadcast TV, that would be bad for our suppliers, because everyone would say, 'Oh, my God, Netflix is killing all of television,' " he says. "And if I told you the opposite, they'd say, 'Oh, my God, Netflix is going to die.' 

Netflix is trying to shake up the traditional television landscape without having the entire industry turn on it. And Hastings' comments suggest that part of the strategy is to keep Netflix's success in hitmaking, or lack thereof, murky - at least for now.