The document discusses the disposable diaper industry in the United States from the 1960s-1970s. It summarizes that Procter & Gamble dominated the market with over 65% share in 1973 due to investments in research and development, manufacturing efficiencies, and heavy advertising spending. Kimberly-Clark was the main competitor but had higher costs and a later start distributing nationally. The industry grew rapidly as more women worked and diapers became seen as more convenient than cloth.