This invariably comes up whenever this is discussed, and what's usually referred to is that many people have a fairly narrow
perception of what interesting tech work is, and sometimes exposure to other industries, or even interviews in other industries, can expand what they view as interesting work. Apparently, many industries have a problem sourcing good technical talent, even if they have the need and the ability to pay.
You might not think a position at an insurance company sounds interesting, but if the CTO starts explaining their plan on integrating their major departments with a new application they are developing from scratch (and maybe you get to help make ground floor decisions, like language), and needs to contain some interesting data warehousing to make sure that the statisticians and actuaries can access the data in heretofore impracticable ways, that might just tickle your fancy.
