I had literally interviewed twice before I was laid off.
I believe if you consistently aim for a slightly higher position at other businesses, and aggressively grow your skillet, you can absolutely climb up salary levels.
I not only answered this question in the original comment you replied to, I gave specific examples of people at vastly different education and income levels doing it.
Yes, anyone can change jobs every 2-5 years and make vastly more money over time. It's literally the best way to raise your salary.
"Everyone* doesn't want to. Many people work their way up to a certain point and are happy where they are. Some people don't want any responsibility. Some people have limitless ambition.
I'm a "big picture" guy so I worked myself into positions where I decide large-scale direction. I'd have no interest in being like, a C-suite tho, because it is too removed from the impact of what I do. VP is basically my career goal.