I just re-watched the "courage" part of the iPhone 7 keynote where Apple gave their reasons for removing the headphone jack. There were three:
1) Lightning is a great connector for audio.
2) The headphone jack takes a lot of space and they want to use that space for other stuff.
3) Apple has a "vision of how audio should work" on phones and they want to "get there as soon as possible." That was a lead-in to talking about Airpods
Note that they underscored that #3 was the "most important" reason they made the move.
#2 always made sense to me and I gave Apple a bit of a pass on removing the jack for that reason, but this thread's article shows that it was bogus, at least for the iphone 7.
That leaves #1 and #3, both of which involve Apple taking a a bigger cut of headphone sales. While #1 is true, it's not where the rest of the audio market is. And #3 (remember their "most important" reason) basically can be translated to "We want to sell you Airpods."
So it seems it really could have been all about Apple making more money, not about their users. Possible exception being long-term benefits created by moving the market in a particular direction.
(disclaimer: Android user, who prefers using bluetooth headphones anyway, but at least that means I don't have a horse in this particular race... :) )