It's possible people grow over time, it's also possible the company changes over time. As a company gets older, positions can require more specialists, so who t

It's possible people grow over time, it's also possible the company changes over time. As a company gets older, positions can require more specialists, so who they are looking for changes. Also, bigger companies can afford to hire lower-skilled employees to train internally if they have a good amount of seniors, compared to when they just start out and require almost everyone to be a senior in order to just survive and reaching any sort of success.