But you're not wrong, the real crux of where the inequality happens is in the bond between people - represented by money - which is nothing but an IOU, a promise of a favor. There's a reason why 2 nations are often leery about what currency to trade in, as it can easily be manipulated for unfair advantage.
The OP questioned people's stances on wealth inequality and free trade, implying that the growing inequality stems from free trade policies. This is understandable from solely an American perspective, but globally and economically speaking, this is untrue. My argument is that it's rather government policies around credit (and its costs (ie taxes)) which fundamentally drive economic inequality.
So, what you say is correct in some ways. Some do get more leverage while others jobs are shipped overseas. Who is getting leverage is every party benefiting from these arrangements. Interesting enough, that includes companies in U.S., South Africa, and China.
larger revenues which would contribute to better education (healthcare, infrastructure etc)
The state takes a much larger share of your salary than the shareholders do, so no you are wrong here. Most money do not go to shareholders, it goes to the state taxes to fund programs and worker salaries, increasing those is a good thing.
The state takes a much larger share of your salary than the shareholders do
Huh, I’ve had the exact opposite experience, and now I’d love to talk to someone who holds the beliefs you described.
A lot of the concentration of wealth comes from the fact that economically there is capital, goods, and people. We made it super easy for capital to flow around the globe, moderately easy for goods to flow around the globe, and difficult for people to flow around the globe.
An Apple phone made in China, sold in South Africa, still sends money (capital) back to the US. This lets a few people gain extraordinary leverage at the expense of the lower ends of the curve in the United States who have seen their jobs shipped overseas.