When groups climb past 12 members people don't have direct contact on a daily basis. By keeping production groups small, supervisors easily see not only inefficiences, but additionally, why the inefficiency occurs. I guess you can say this is engineering by walking around.
Installing new technology - and knowing what technology is available - as well as seeing the problems incurred are obvious quickly. One of the benefits of being part of a manufacturing village, as a satellite owner/manager is you are not top of the food chain: someone in central services will either have the proper solution or know where to find an answer.
Central services, through monitoring and audits, ensures continuing efficiency which of course is exceedingly Important to profits.