I mean its kind of a trade off. Sure it would be great for the people that would be positively affected by the raised minimum wage, but it is inevitable that some people would have to lose their jobs. And no doubt these people will run to the government and who will end up paying for them? I'll let you answer that. I also don't understand why more people don't get into a specific trade. My uncle owns a construction company and with a few weeks on the job i learned how to do nearly every aspect of flatwork concrete. Most places this is a decent paying job... around $15-25 depending on the size of the company. It might be more work.. but you need to do what you need to. Physically incapable people would be a whole different story.
And you got a few weeks on that job because he was your uncle. Most people don't have that opportunity.