>Apple's incessant need to obsolete their old operating systems is surprising to me. I would think this would hurt their overall adoption rates (especially long

>Apple's incessant need to obsolete their old operating systems is surprising to me. I would think this would hurt their overall adoption rates (especially long term) as people get sick of constantly upgrading their OS and dealing with any fallout that results. No, it helps getting technology ahead. Instead of, you know, having hundreds of millions of people still using Windows XP, as they do. Plus, what "fallout"? Each release has some issues for some people in some use cases, but that is irrespective of some 5 year older release getting deprecated or not. And the issues --which don't affect all, usually just a small minority, e.g the Vagrant users as of late-- get ironed out eventually with point releases.