Given the evidence compiled by Mishel et al, it would be difficult to maintain that technology has been the main culprit in the upward redistribution of income that we have seen.
It is not difficult to identify other potential culprits – trade would certainly rank high on the list. A trade policy that quite deliberately puts factory workers in direct competition with low-paid workers in the developing world, while protecting doctors and other highly paid professionals, would be expected to redistribute income from the former to the latter.