You Gave Us Those Nice Bright Colors

"Almost from Kodak's founding by George Eastman in 1880, the money had rolled in, thanks to Eastman's razor-blade strategy of selling cameras cheaply and reaping lavish margins from consumables —film, chemicals and paper.
"As late as 1976, Kodak commanded 90% of film sales and 85% of camera sales in the U.S., according to a 2005 case study for Harvard Business School. Such seemingly unassailable competitive positions tend to foster unimaginative executive cultures, and Kodak's was no exception."

Michael Hiltzik in the Los Angeles Times depicts the decline of Kodak.