The "moving target" problem is significant for countries (or geographic regions in the case of large countries or open borders). However, for an individual comp

The "moving target" problem is significant for countries (or geographic regions in the case of large countries or open borders). However, for an individual company, it is a tragedy of the commons situation. Why should a company A pay more to train a bottom tier worker into a high tier worker, when said worker will then be able to move to company B who offshore's its low tier workers. In effect, company A is subsidizing company B's training program.