John Tolkien started to write the Silmarillion one hundred (one HUNDRED!) years ago and continued to work on it until he died, 41 years ago.
Forty years later, an Illustration and Graphic Design student worked all by himself, for about one year, to produce a wonderful deluxe, hand-illuminated edition of the Silmarillion.
But he can’t publish it. Because other people, who are NOT those who wrote those texts, haven’t given permission (synthesis from the interview):