The modern service job isn't meant to be sustainable in the first place. It's entirely based around the idea of having surplus labor using it inefficiently.

Any sane economist that has to solve for the constraint "everyone has to provide for themselves" aka the mythical republican "responsibility" would first start by creating enough jobs to reach full employment. When you leave everything up to responsibility you also have the duty to provide everyone with the ability to live up to their responsibility.

Society as a whole doesn't benefit from exploitation or unsustainable businesses.