I have noticed that many people go gliding through school with not a thought in their head as to what they'll do when they graduate. You have to have some idea of what you'd like to do by the time you graduate from high school. It doesn't have to be specific, but you ought to know what sorts of things you like doing. Compounding this sense of aimlessness, there is this myth among academic circles that study is its own reward, and that all you have to do is to go to school, graduate, and then magically someone will offer you a job doing exactly what you studied for.
It ain't like that.
Education presents doors of opportunity, but it is up to you to find them and open them. A PhD is an indicator that someone knows how to study things to the edge of human knowledge or experience, discover something, and document it. That skill alone does not translate directly to business success. There are manufacturing, marketing, accounting, ethics, leadership, psychology, and so many more issues that are required as well. A PhD does not necessarily teach those things. In fact, learning all these fields requires a great deal of talent, experience, patience, and circumspection.
It is called personal development. And if you were not also learning these things at home, in your community, and in your hobbies while going to school since your earliest days of Kindergarten, you have missed many lessons.
So you ask where those jobs are for PhD degrees: They're available if you know how to market yourself, how to expand your interests, how to understand the people around you, and how to lead others. From the perspective of someone in Management, a PhD shows that you know how to study something with great discipline and document it for someone else. What that thing may be is almost irrelevant. It is almost certain that what you studied is nearly useless to someone in business today. It usually takes decades and sometimes even centuries for some of these discoveries to sink into common understanding.
To get a career, someone with a PhD must shift gears. Turn your focus from the very specialized to the broader context of what is needed to take this experience and translate it to something useful to someone. I can't tell you where that is, or what that will be.
The honest, brutal answer is that very few PhD programs have direct utility in the regular working world. But if you're thoughtful, outgoing, curious, and willing to try something completely new, you'll do okay.