I dont this argument.
Archers may very well earn more money, but most of the stuff we can buy isn't really that useful to us. Heavy armor messes up our accuracy (I've not seen a dedicated archer in full plate), melee weapons are generally a last resort anyway. Archers will still generally get murdered by melee characters pretty easily.
We may earn more money, but we are not as diverse. Once we get our Warbow/Longbow and a decent set of light armor then we don't really have much to spend it on. So the argument about us earning more is to be fair, a bit pointless, as we have nothing to really spend it on.
Unless you mean heirlooms, in which case sure we might get money to buy them faster, but its still the same old stuff.