Quality-management gurus have always assumed that maintaining product quality would improve profitability. It turns out that they are correct.
Kimes, S. E. (2001). How product quality drives profitability: The experience at Holiday Inn [Electronic version]. Cornell Hotel and Restaurant Administration Quarterly, 42(3), 25-28. Retrieved [insert date], from Cornell University, School of Hospitality Administration site: http://scholarship.sha.cornell.edu/articles/464/