Not being paid what you are worth? Maybe the output that you generate is no longer as valuable...
Today’s topic is about the value of your contribution to the organization. Some companies find that the results of jobs they paid handsomely for can now be obtained much more easily, or perhaps may no longer even be required. (Camera film and photofinishing come to mind). A master technician skilled at making photographic film is just not worth very much when the demand for their services is so low in a digital world, or if the service they provide has become so simple that it can be easily automated.
Likewise a manager of a thriving operation is much more valuable to that organization than they are to an organization that has set its sights much lower.
It is less about what a person with a title is paid, and much more about the need for that person with that title in the first place. Need is based on desired outcomes, not on vacancies in a company org. chart.
While the phrase “Don’t you know who I am” may illustrate the likelihood that you can produce a specific set of result based on past performance, it says little about how much those results are worth.