In the story we have 5 people who know about Maya's problem. She, Josy, Derek, Sage and the MC, none of them talk about this solution. No one is suggesting that Maya find a job.
Why ?
1. They're all dumb, or if you want to be nice to them, no one has thought about it. 5 people, two of whom have worked all summer to make pocket money, it seems unlikely that nobody will think about it. It's not like it's a great idea, I think the majority of players have thought of it. I do not see how DPC could manage to explain that no one has thought of it.
2. The other possible answer is what? That in the universe created by DPC for its game, a part-time job is not enough to pay for tuition in this college. So that's why no one suggests this solution.
3. Maya is a big lazy bitch, and moreover a master of manipulation who manages to ensure that none of those aware of her problem suggest this solution to her.
I don't have the answer. We will have it later in the story. In the meantime, I retain the solution which for me (it's totally subjective) is the simplest / logical, that is to say the 2.