Nobody claims the solution is CEO-mandated "artificial" wage inflation, the report emphasizes the need for strong workers unions that can demand more equitable pay.
The problem is that the unionizing workforce needs to have some basic level of skill or expertise with machinery or the business process that isn't easily replaceable. That and they need to be legal citizens, which isn't always a given in agriculture/food services/landscaping jobs. And provide something that a team in India/Ukraine can't.
We are "here" (large and growing inequality) because our educational system is failing to emphasize and produce the necessary amount of high skilled workers that can replenish the middle class through the value of their skilled labor.
But more fundamentally we are here because the pace of innovation in technology is slowing to a crawl, there are hardly any new machines being invented in silicon valley that take new skills to operate and generate real returns to raise the average American's standard of living. Most of what I observe from startups is either garbage powered by the ad economy, solutions looking for a problem, or get-rich blockchain/AI/ML get-rich-quick schemes looking for an easy VC buck.