What is the pain point of the headhunting industry?

I think the biggest pain point should be the problem of resources, resources are sometimes basically in the hands of headhunting consultants, after all, headhunting companies, many customers docking, industry dynamics are analyzing the headhunting consultants are doing, once the headhunting consultants are competitors to dig away, then not only the loss of resources but also funded the competitors. So how to effectively keep the resources in the company is the most important.