At the current US federal minimum wage of $7.25, that means you would need to work for about 0.1 seconds to afford the electricity bill for one query. Maybe 1 full second for one of the really hard ones.

So my serious answer to your question is, I'm pretty sure these disenfranchised groups can find room in their budget for a query or two if they think it's worth doing. In fact, they might even find ways to save more than 1 second by using that query, in which case they can produce more economic value... And so society gets richer.