Well what the right thing to do depends on whether we're thinking idealistically or pragmatically. Idealistically everyone deserves the same right to minimum wage protection. But if we followed our ideals in this situation then most disabled folks wouldn't be hired at all.
So what's the 'right' thing to do? I don't know what you mean by putting economics on a higher pedestal. If something isn't economically sustainable then what does it even mean to do the right thing?