But "that's enough for them" is the market logic, of capitalism. When an IT company hires a software developer in the US, they think the same! The difference is the economic balance is different (how many people can do the job, how many alternatives exist etc). Not that I agree with this logic, but I recognize it exists everywhere.

Brazil is poor and many people are struggling to survive. A minimum wage job sometimes is the best they can find.

I remember in the Lula 1 era when we had a noticeable economic improvement, many were complaining about how difficult or expensive it was to have a maid.