Decent read here on how the lack of union membership has allowed for greater wage inequality. My argument is that we are more dealing with a third and fourth industrial revolution, coupled with subsequent labor issues, on a system which greatly rewarded the entrepreneur and capitalistic class. Payroll and wages are - by design - capped at levels. The largest offenders are the largest employers.
“The labor market and economy are evolving in a way that’s giving employers increased power over workers,” he said. “Unions were, at least at one point, an important institution for resisting and adding some balance.”