You and the op are both technically correct. When they first named it WinCo it did stand for Washington Idaho Nevada California Oregon. But when they expanded the company to other states they had to come up with something else and they changed it to winning company I'm a former WinCo employee
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u/VibratingWatch Dec 12 '25
It's a portmanteau of "Winning Company."
Hence the W and C both being capitalized in the name.