Why don't they stay put?
With the baby boomer generation, there was an expectation in the earlier years of their career, they would be moving every few years because of job offers. In their later years of working, much of this trait disappeared.
Each generation demonstrates traits. These traits are important to all businesses. As an example, when you read that fewer people are owning homes and are instead opting to rent, this would be an important point to a paint store.
The article of the month for September discusses the need for every small business, product or service oriented, Internet or brick and mortar, to be observant of these changes. There are new opportunities with these changes.