We don't. They can take the job or not take it, and if enough don't take it, the wage goes up. Now, why are you complaining that jobs don't pay enough to finance college when college costs jumped far faster than anyone would even dream of jacking the MW?Lets look at the real consequence of low minimum wage on teenagers.
Those minimum wage jobs used to pay for your college tuition. They paid for mine.
Now, those jobs don’t come close to paying for college. That teen has to substitute student loan debt to make up for low wages
Why do we expect teens to subsidize marginal businesses ?