Old hands move on, and fresh blood is needed to fill their shoes. There is still movement in the industry.
But these new hires will not be the dream land wanabees who base their career on £65K to OAA then pop over to FR for a shiny new 73...
They will be the ones who know who and how to get a CV to etc and have likely got to 250+ hours (as in my eg above) from their 200 odd starting point via the ways mentioned above and in many other posts = working damned hard to get hours anyway they can!
iX