Blame it on the internet.
"You're now one click away from every sex act imaginable for free. And so it's just passe at this juncture," Playboy Enterprises CEO Scott Flanders told The New York Times, which first reported the change.
Back to the future
Yes, people DID buy 'Playboy' for the articles. (USA Today, 10/13/2015)
Playboy cover to cover. (3/19/2009)