That literally describes the problem though. There are too many people that can do that job, so there's a surplus supply for it to be valuable to the market. It isn't the responsibilities of the Scrooges and the Facebooks to account for the fact that there isn't enough demand for that position for it to pay well. If people are unable to find work, or are otherwise unable to have enough stability so as to avoid exploitative work, that becomes a societal responsibility. Don't tell Facebook what that job should be worth, or what it should entail, that doesn't make any sense. Just like minimum wage laws, they don't make any sense.
If we're legitimately talking about situations where the balance of power is so unfavorable to the unemployed individual, the solution is to start talking about UBI, not micromanaging very specific roles at very specific companies.