"US industries have become much more concentrated in recent decades. The average Herfindahl-Hirschmann Index (HHI) has risen 90% since the

"US industries have become much more concentrated in recent decades. The average Herfindahl-Hirschmann Index (HHI) has risen 90% since the start of the 2000s.” @SoberLook
thedailyshot.com/2021/12/09/use… https://t.co/neANnAXYOj

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