Earlier quoted context omitted.
Of course, but I didn't think it was necessary to state "all else being equal". In a conversation about why the same employer pays less to people if they move, it's strictly because they can and the employee doesn't have a choice to defect. Whereas in SF, the employee can walk around the corner and start working for someone else. Which is an illustration of the intersection of supply and demand.
You aren’t wrong, but we need to be careful when applying typical market economics to the labor market. It has its own field of study specifically because some of these relationships/intersections breakdown in the employee-employer relationship. A classic example is the lack of perfect information in the labor market like you see in a commodities market. A more specific example is the wage-fixing scandal that hit tec…
Employers colluded to reduce number of buyers, hence reducing demand, causing sellers to have fewer alternatives to sell their services to, causing them to sell at a lower price than they otherwise would.
There may be more effects due to lack of information or ability to move or issues of social signaling compared to a simple example of widgets, but in the grand scheme of thing, it still follows the same principle.