The goal of the investor class is to maximize profits. That's the quick and dirty story of capitalism.
Globalization has afforded investors the opportunity to relocate production to low cost locations, corporate leadership is obligated to lower costs as a function of maximizing profit. It's right there in every corporate charter.
Even better for investors, relocating/offshoring has stripped organized labor in the formerly high-wage USA of bargaining power and now union membership, where it even exists, is open to the empty rhetoric of liars like Trump.
Best of all for the investor class? Their complete financial control over the political duopoly, which bestows the ability to institute an asset stripping, wage and benefit trimming agenda no matter which party is in 'power.'
Not everything about globalization is bad--workers around the under-developed world have seen income increases--but mostly globalization is a get-richer-quicker scheme for the investor class.
A notable exception is export giant, Germany, where union membership is fully supported. If workers in the USA could organize around a German-style seat at the table like they had prior to globalization, they could exert influence. But effectively re-organizing them at this point is a herculean task. For example, despite rank and file union member support for Sanders, most union leadership nonetheless endorsed status quo poster child, Hilary.
A final note: Trump's actually right about the unlevel playing field that tilts in the favor of many of the USA's trading partners. We're the most open border free traders on the planet, our trading partners put up protectionist barriers. But despite Trump's bluster, the investor class, as this article makes clear, will preserve their globalization profit windfall, and wages will continue to stagnate. On the bright side, imported steel, t-shirts and petfood are on sale at rock bottom prices right now at Walmart.