My market likely already exists.
Large organizations that have several hundred or more employees, where I would go in as a consultant and/or trainer. For these clients, I would offer workshops on communications, leadership development, team facilitation and so on.
Small organizations would also be good clients where the organizational leader is wondering how to increase employee engagement - to reduce turnover and heighten employee productivity, while keeping a good culture that values morale and work-life balance.
I have also worked with entrepreneurs in a coaching capacity, helping them to stay on track as they create and build their business.
Typically, however, I am looking for something that will appeal to a professional audience. I picture working with knowledge workers - people who are smart, willing to learn, thoughtful, considerate, challenging (in a positive way) and open to trying something new. I also like my clients to have a creative flair, and experiment. Sometimes, trying something new requires a leap of faith, or an attitude of "fake it 'til you make it". I enjoy clients like that!