Industries need the hierarchical treadmill of juniors moving up to mid moving up to senior and so on in order to populate the top level. People can't just start

Industries need the hierarchical treadmill of juniors moving up to mid moving up to senior and so on in order to populate the top level. People can't just start there. The idea of 1 staff+ engineer and 10 juniors will only work if businesses are happy with people moving from junior straight to staff+. That seems unlikely to me.