The issue I have observed is that management at many companies, most especially in tech, is so terrible that they don't know how to train people (e.g., it used

The issue I have observed is that management at many companies, most especially in tech, is so terrible that they don't know how to train people (e.g., it used to be assumed that when a company hired a new employee, the employee would need to be trained on the company's computer systems, but now it is required that the employee be hired already proficient in the company's computer systems). Coupled with being located in very expensive regions, tech companies have to hire at high wages, making training very expensive already. Something will really have to give somewhere for this to change.