You americans propably see this differently, but in europe it’s very simple:
The employer need you to come to work. He doesn’t care where you live and how long your commute is.
The worker can chose an employer close to his home, or relocate and live close to the employer. Generally, if it’s a priority, the worker can live within walking distance of the employer. If other priorities overrule proximity, there’s likely still public transport to get to work.