He pioneered the bookstore-as-superstore, a retail behemoth that dominated the industry before Amazon overtook it with its online reach. Riggio, Leonard, Deaths (Obituaries), Barnes & Noble Inc, Book Trade and Publishing, Books and Literature, Amazon.com Inc, Manhattan (NYC) He pioneered the bookstore-as-superstore, a retail behemoth that dominated the industry before Amazon overtook it with its online reach. NYT > Business