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No one ever went broke underestimating the intelligence of the American people

Cultural  

  1. People can easily be persuaded to accept the most inferior ideas or useless products; attributed to H. L. Mencken.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.