That's one view. But Roemer show syou can have inequality without "bad" exploitation -- he has models in which the poor exploit the rich (the rich transfrer surplus labor to be poor). He uses these to conclude that it's not exploitation that is troubling, but inequality. These models can be objected to because they do not consider power relations -- if the rich voluntarily and unforcedlt transfer surplus labor to the poor, no big deal. If they do so grudgingly becaise of, say, taxes, taht is not exploitative because it si not unjust. This underlines that exploitation is somehow-objectionable surplus transfer --whether because it is forced or because it is unfair. But mere inequality is not exploitation, or even per se unfair.
I wrote a paper on this a long time ago, In Defense of Exploitation, Econ & Phil 1995. I haven'y looked at it for ages, bit I thought it was pretty good. Frank Thompson liked it.
jks
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