Well, that's where we disagree. Apple did not product an active stylus until AFTER a few generations of Microsoft tablets offering them. It was only when Microsoft received praise in the industry for the quality of its execution did Apple produce one.
Capacitive styli were available for the iPad from day 1. Customers were requesting active stylus support. 3rd parties thought out of the box to push the envelope of what was possible in order to bring some kind of active stylus to the iPad. I refuse to believe that it was simply a "happy coincidence" that Apple produced an active stylus when they did, or at all.
I guess the way I look at it is this: Samsung introduced the Note series in 2011, with an active stylus. Apple introduced its first phablet last year and...no stylus. None this year, either. My conclusion is that Apple didn't see the benefit of a phone with a stylus, and decided against providing one, even though lots of folks love-love-love the S-pen.
I've used capacitive styli - plural, mind you - with my iPad 2, and may I say that they uniformly stink. I know that the iPad 2 is ancient history by now, but I've arrived at the conclusion that the passive capacitive touchscreen, as good as it is, isn't really the best for drawing or sketching, although experienced artists have created some pretty impressive work on the iPad.
The MS Surface was announced June 2012 and shipped late 2012. And the reviews were positive, particularly for the industrial design. So, given the amount of time it takes to bring a product to market, I'd have to believe that Apple looked at that original Surface and said, "Holy cow! We have to have a stylus!" And three years later, here we are.
Alternately, Apple designers may have been looking at the state of the art for years, trying a dozen different writing technologies and discarding them all, until they came up with a stylus design that made sense to them. When it was "right," in their estimation, they built it. In a few weeks, we'll be able to see for ourselves if they got it right.
To me, the latter scenario seems more "Apple-y", but I could be wrong.