There are many vacant minimum wage jobs. I think the issue here is just that you overestimate the number of people who cant get a job because minimum wage exists. If you are a decent worker you are able to get a minimum wage job in this country, so if you cant you are by definition not a decent worker. Looking at the micro scale (employee only worth $14.90 to a single company) is largely irrelevant because there are plenty of other companies that find decent employees to be worth $15/hr. The level of incompetence you need to have to not be worth a minimum wage job to any company is so high that you are actively hindering business from being done.