Another vague thing is, how do they define "key employee"? The article describes it as, "those notable enough to make it into the tech news". How does one get t

Another vague thing is, how do they define "key employee"? The article describes it as, "those notable enough to make it into the tech news". How does one get to be so notable? Having a high-responsibility job at an important company probably helps a lot. So by the term's own definition, you're naturally going to find that big companies like Google are where "key employees" are grown and exported.