Most of the companies, including those where Lean is claimed to be practiced wish to hire people with domain experience to bring about improvements in their business processes. More and more companies these days are placing job advertisements for Lean, Six Sigma & Lean Six Sigma positions with a key requirement of having the industry/domain experience. Those people who don't have the required experience are simply not considered, howsoever great their CV may look like.
What baffles me is how can an outsider bring about improvement in the organization when he is having the same kind of skill-sets & experience that some people already present in the organization might be having. After all, the newcomer would need sometime to adapt to thee working culture & understand the working methods. And most likely, he/she may propose something which has already been tried or considered before.
What is needed for the organization is to tap the huge brain wealth that it is already having in the form of its existing workforce. Using Kaizen, the organization may come across a number of improvement suggestions which may hold great potential. What is required is to have a healthy dialogue with the workers. After getting the improvement suggestions, there might not be any need for hiring any new person with the "required domain experience".
Lean Six Sigma are free of any industry & domain. Seeing them from such a narrow perspective will only reduce & diminish the huge scope they hold. After all, Lean started as a manufacturing industry concept but has been applied successfully over the years in so many industries and domains like healthcare, financial services, services, banking & insurance, etc. Those who still see it from an industry perspective do not understand the true meaning & potential of Lean Six Sigma...