It's a LOT easier to find people for jobs if you offer better salary
If there are 200 openings for people who "must have 5 years of java" (pick a different buzzword/skill each year) and only 100 qualified people, can their salaries reach a reasonable equilibrium level, or will they spiral up?
You'll get the situation where there's a tacit understanding that people who put "5 years of x" on their CV actually only have 2 years and enough intelligence to fake it until they make it (hopefully); which is not healthy either.
If there are 200 openings for people who "must have 5 years of java" (pick a different buzzword/skill each year) and only 100 qualified people, can their salaries reach a reasonable equilibrium level, or will they spiral up?
You'll get the situation where there's a tacit understanding that people who put "5 years of x" on their CV actually only have 2 years and enough intelligence to fake it until they make it (hopefully); which is not healthy either.