Honestly.... the easiest ways to put it is that Disney has always had that "Magic"... even before Disney tried to use the term "Disney Magic" to describe everything about the parks and what they had to offer.
Unfortunately, What I've seen over the past several years is Universal putting all sorts of money, hard work, and effort into improving their product and the guest experience to try and help maintain and drive their growth and image. Disney however has decided to rely simply on the Magic they stockpiled over the previous 50years of their Theme Parks to maintain and drive their growth..... which has had mixed results in our experience as reality does its best to make itself seen behind the pixie dust.