In answer to the question of what one should do after 10 years in your field, leave or find ways to advance, Dr. North writes this:
Once you’ve hit the 7-10 year mark in your field, should you keep on getting those hours of experience for master status or should you switch to another field touching yours and start that experience clock over?”
If you quit 100%, you will get rusty. The new field should be complementary to your main field. Alternative: become a consultant. You will then be forced to learn marketing. Or become a writer/consultant. Inside the firm, become a teacher.
“On the other side of the table, if you hire for a job that needs a journeyman but not a master, would you rather offer a master a journeyman salary assuming an excess of masters or look only for journeyman candidates?”
Go for the journeyman. You may get a hot shot. The master has seen his day. But if the master could be a teacher or mentor, hire the master at a wage in between. A good teacher is worth paying for. He will get journeymen up to speed.