I'm unable to spend much time commenting atm, but what I will say is that unlike the Economist, you are the one editorializing. Factually, capitalism/globalization has benefited lower classes materially, but has stripped them of agency. While you are right globalization is not entirely new (e.g. mercantilism, the East India Company), what is new is private, multinational actors being able to choose which set of rules they can play by.
That is genuinely new, at least at scale. Private actors making states compete against each other to lower their taxes and sue nations for enforcing health codes a la investor rights trade agreements.
While trade is good, extractive trade is damaging. The American industrial midwest is a good example. Capitalists first moved jobs overseas, and then automated what was left. We still have strong manufacturing, but few people doing it.
This level of inequality, lack of agency, and lack of hope is incredibly corrosive to democratic values. You can see it for yourself in the election of our leader, the grievance of the pepés, and the general ascension of the right. The fact that this kind of thing is taking place globally across the trilateral powers means there's something systemic at work, it's not a quirk of American circumstance.