Exactly true.
Providing everyone with a living wage doesn’t work in a capitalist system. FWIW, I used to work in such jobs (fast food, catering, etc.) when I was in college, and nobody was there expecting to make a “living wage.” In fast food, many of the employees working the line were either high school kids all college kids who were simply working there for pocket change. There were also some spouses (generally woman) that worked there for additional income and/or benefits. Nobody thought of working the line as a stand-alone career.
There were occasionally some people that enjoyed the work, and did turn it into a career. However, they went into management. But guess what…it required a higher skill set, additional training, and additional responsibility…and as a result paid a “living wage.”
These “living wage” articles and opinion pieces also focus on the jobs that require the least skill and that anyone can do, and that 99% that have that job don’t consider a career anyway. They never focus on, say, the jobs in that business that people do consider a career and actually pay a living wage.
Now, there are situations where employees are abused. People making commentary on this issue should stick to the issue. Focusing on McDonald’s line workers does a HUGE disservice to and discredits their argument.