A manufacturer can save millions by slicing a few inches off the bottom of every shirt.
Bad companies look at this as a spreadsheet question: How much money can we save by reducing fabric quantity?
But the most important data never shows up on a spreadsheet: Customers who bought the shirt, thought it seemed short/cheap, and never came back. Your “fabric cost” spreadsheet doesn’t have a column for “customer retention costs.” Which means you may be saving money on a cheap product, but losing more money in lost repeat sales.
A good company has better math: What is the most economical way to keep our customers happy?