What percent of people are being employed as a martial arts teacher?

Before asking this question or reading the answer, one really needs to think about what he or she considers a "successful martial arts instructor", what will be used to judge an instructor's level of success. His/Her student count? His/Her students' quality? His/Her income? As an industry, Martial Arts instruction is like that of any other; they seem to fit into the 90/10 rule; where 10% of the businesses have 90% of the market share and the other 90% of businesses are scrambling for their piece of the 10% that's left. It seems more or less that only %10 of instructors will do their best to go above and beyond in teaching their art and strive for Excellent customer service. Most, but not all of the 90% often depend on their ego and expect that because they are sensei or sifu or head honcho people should keep coming through the doors even though they treat them poorly; They will also focus mostly on their art, thinking that being a better martial artist will make them a better teacher which is not the case. Being a fantastic fighter or forms competitor does not automatically make you a good teacher. Instructing requires another skill set entirely, and if instructor don't also strive for perfection in the teaching skill set, they will eventually fail. Furthermore, if the instructor decides to operate his or her own school, then a skill set different from that will also be required. To find an instructor who is a great martial artist, great teacher, and great operator? 1 in 10 is probably a generous guess. This does NOT by default make the failure rate for martial arts instructor 90%; many instructors can operate in mediocrity for decades, so it depends on how you want to rate "success" in martial arts. Personally, I would say 10%.