Chinese calligraphy fonts are beautiful, but why is it so rare to see calligraphy used on store signs and other places?

Because it depends on the store, a font must match the merchant's products. For example, a clothing store that is full of fashion elements cannot be represented by the simple atmosphere of calligraphy, while calligraphy and painting points, antiques, etc. Most of them will choose calligraphy signs~ but good calligraphy is hard to find, so merchants usually choose computer fonts~ I hope it will be helpful to you