While there's definitely signs of geographic stickiness nowadays, I wish someone would age-adjust those statistics — above a certain age people tend not to move at all, and we have way more people above a certain age nowadays.
As a young person, I refuse to move to a bigger city than where I'm at. I've got a wife who has a career, which makes moving incredibly difficult. I also don't want to move farther away from my family and go to a high cost-of-living city just so that major corporations can take advantage of the population density to have a deleveraged work force.
