Globalization is not the cause of economic inequality. The cause is political and cultural. Since the late 1970's, the top 1% of income earners (> ~$800,000 in income) in the United States has captured 60% of economic growth as income. The top 10% (> ~$200,00 in income) of earners captured 90% of the growth. The bottom 90% of the population has captured only had 10% of the growth in wages over that time period. The US now has might have the highest income inequality that we know of in all societies, present and historical. For example, India from 40 years ago that had a strict caste system and half the population was illiterate was more egalitarian the the current day US. Apartheid South Africa was more egalitarian than the current day US.
This started in the late 70s as that is when we started dropping the progressive tax on high income earners extremely low. This incentivized senior managers at companies, who set their own compensation, to set higher and higher wages for themselves, capturing most of the economic growth of the past 50 years.
Whether you think this type of inequality is justified or not, its worth looking at closely because it is hard to imagine an economy or society continuing to function indefinitely with such extreme difference in outcome between different social groups.
This started in the late 70s as that is when we started dropping the progressive tax on high income earners extremely low. This incentivized senior managers at companies, who set their own compensation, to set higher and higher wages for themselves, capturing most of the economic growth of the past 50 years.
Whether you think this type of inequality is justified or not, its worth looking at closely because it is hard to imagine an economy or society continuing to function indefinitely with such extreme difference in outcome between different social groups.