What if they're working for a startup that rings radio stations for free concert tickets and resells them?
So? I don’t see the point of going down such a rabbit whole as if all jobs or even all high paying jobs are morally acceptable. I’m sure a VP at Exxon does a lot to earn their bread. They’re still apart if a piece of shit company that puts all of humanity in danger with their actions and lies.
The moral value of the employer is mostly irrelevant when discussing the remuneration of the employee. I can see the case for disallowing a business from performing unethical actions like that, but so long as that business is legally allowed to exist, yes, anyone who works there for a full time work week should have a comfortable life.
Sounds like the startup is the problem here, not the employee.