A few jobs back, my employer promoted me once within a year of starting from a new college graduate position to a junior position, then strung me along for three years with "you're just not quite ready for a mid level position but you will be. Any day now!" This was all in spite of me doing the work of a senior position within the company for the last two years.
So I got a job at a different employer and went from a junior position to a senior position, like magic, nearly doubling my total income in the process. My coworker did the same, hopping from a senior position to a management position at my current employer. I've increasingly observed how corporate United States is painfully stupid and inefficient and it continues to boggle my mind