Comment It's a lot harder to make 3000 glyphs (Score 1) 50
Among widely available fonts under OFL, GNU GPL for Fonts, or other free licenses, not many of them cover the 2,100-odd Jouyou (regularly used) kanji and 1,000 name kanji that BadDreamer mentioned. It's a lot easier to make a font that covers 100-200 characters from two alphabets, such as Chilanka that covers the Latin and Malayalam scripts in a distinctive and dyslexia-friendly handwritten style, than one that covers 3,000 different kanji made of 600 radicals (as iggymanz mentioned) with manually-tuned slight variations to their shapes to make them fit next to each other in a character.