an immobile work force

Those who created the economic meltdown of 2008 and walked away with a pocketful of cash (and continue to do so) may be pleased as punch that "I got mine."

But since wealth has a way of instilling a desire for still more wealth, it might behoove the well-heeled to reflect on the effect of previous 'successful' activities. What will the vampire do when the latest corpse runs out of blood and there is a shortage of juicy victims?  

U.S. mobility for young adults has fallen to the lowest level in more than 50 years as cash-strapped 20-somethings shun home-buying and refrain from major moves in a weak job market....
"Young adulthood has grown much more complex and protracted, with a huge number struggling to reach financial independence," said Mark Mather, an associate vice president at the private Population Reference Bureau. "Many will get there, but at much later ages than we've seen in the past. More and more we're seeing many young adults routinely wait until their 30s to leave the parental nest."

Living on a diet of humming birds' tongues requires a well-fed and agile constituency to actually catch the humming birds.