Publishers who rise to condemn new (and still unproven) ad-blocking features on iOS and OS X ought to ask themselves one question: Who needs whom the most?
Apple’s move answers the question. No need to think it’s building ad-blocking technology to monopolize the field to the benefit of its iAd platform whose revenue can’t “move the needle” for a company where revenue and profits mostly come from hardware (see the last 10-Q report page 25). Apple’s “ulterior” motive is making everyday use of its products more pleasant, resulting in more sales: the usual ecosystem play.
I also believe that a lot of this comes down to how much you respect your readers. This was our single most important goal with MacStories 4.0 last year. It won't change anytime soon. It's important for us that anyone – no matter their browser or Internet speed or data cap – can read our website comfortably and quickly.
As a user, I'm ecstatic about Content Blockers. Some might say it's not morally acceptable to block ads, but when publishers reach the point where a single 80 KB article weighs 6 MB, maybe it is time for a wake up call.