You can't be serious. We're discussing a class of people making sub-minimum wages, barely scraping by to afford rent and groceries (much less any childcare or medical expenses), and your suggestion is "lobby to change that" or "just get a different job"?
As someone who has previously worked for that wage and finally did "get a different job," there was no "just" about it. I had the support of well-off family who were willing to significantly contribute to my education and living situation, and it still took years of hard toil (all while being nearly destitute) before ever achieving anything resembling financial stability. That was not (and likely never will be) an option for 90-95% of the people I worked with in the food-service industry. There is absolutely no justification (beyond abject greed) for that type of poverty wage, and it's the responsibility of everyone in our society to prevent that type of exploitation of the vulnerable, precisely because they cannot afford to "lobby to change that" and often can't "get a different job" outside of the same industry.