One of my clients, a modest sized business inhabiting a narrowing but quite deep niche of manufacturing, has over a period of time put considerable resources into training their essenial technical people to be expert in the fields vital to their success.
A topic of discussion and concern has always been, “how do I get my investment back when I train them, and they leave?”
Perhaps the better question to ask is “what happens if we do not train them, and they stay?”