Why is Quercus serrata not categorized as mahogany?

The texture and grain of Quercus serrata is not inferior to mahogany, and the collection value of the furniture made of it is not inferior to that of general mahogany, and should be comparable to that of the big red sour branch wood, but due to historical reasons its wood color and grain is inferior to that of the three major tributary woods, and the production is small, and the large material is difficult to grow, so its status has always been hovering in the high-grade dark-colored precious hardwood level, and it has not been selected as a national standard mahogany. Thank you