Why do we only look at supply and demand for the price of labor? I have no idea how to answer that question..,
You seem to wish pricing worked on some personal value system or profit sharing. Profit sharing is an option for tech people, but it involves risking your own limited capital or risking your base salary. Most employees are the opposite of risk takers. People don't like to think of themselves as gutless, but 90% of people are. It's actually quite strange, because humans underestimate almost every type of risk, but drastically overestimate risks involving career choices.