And yet, if the profits can be prevented from all floating to the top, globalisation would appear on the surface to be an excellent way of redressing global inequality. Massive international wage gaps will be perceived by the market as an exploitable inefficiency, which over time will be ironed out.

Or, to put it another way, if two people wish to trade, it must be in both of their interests. If I, as a westerner, go to a third world country and buy a bunch of stuff that from my perspective is cheap but from their perspective is expensive, we both end up happy. What's so terrible about that?

(Of course where it falls down is where labor is cheaper because of poor worker protections and exploitative practices, in which case it constitutes an end-run around the labor laws of the richer party. But they are the ones that should be upset, not the poorer party, whose labor laws would be terrible regardless of exploitation)