The theory would say that you do.
In most cases, your employer would increase your salary annually to keep in line with inflation, or a bit more.
But your experience and knowledge aren’t just worth keeping up with inflation. While you’re with an employer, you’re likely increasing your skills and knowledge of the job and the market. But an increase in line with inflation doesn’t reflect that.
It reflects the same skills you had when you first started with that employer.
So if you stick with an employer enough time to gain some valuable experience,
you’ll find that you can dip back into the job market and get an increase in salary that would significantly beat the annual increase your employer would give you.
The first time that I had changed employers, after 3 years with my previous one, my salary increased by 40%!
Hope that helps
Jon