I've been pondering that question, because I use to think that everyone could be organized. After 20 years as a professional organizer, I now understand that while every space can be organized and made more efficient, and certainly everyone can benefit by having a a more organized space, not everyone responds to getting organized.
There can be many reasons for this...some people are inordinately resistant to change, some people have abundance issues and must be surrounded by a mountain of stuff, some people have serious disorders such as hoarding. Some people already consider themselves organized - it just doesn't look that way to someone else. Author David Allen has said "Everyone is already organized to the degree they need to be, to have the world match up to their internal standards. And usually “having to get organized” refers only to things they don’t care that much about. In other words, oil painters have their brushes organized, fishermen their tackle boxes, golfers their clubs."
Recognizing that not everyone's personal definition of being organized is the same, is a level of maturity that the veteran professional organizer brings to the table. There's no amount of trying to convince someone that they need to get organized if they don't think so!
Take this test: which of these spaces looks organized to you?