Readmill
Won Apple Design Award for beautiful social reading — but Kindle, iBooks, and Google Books owned ebook distribution; Readmill couldn't acquire books through its app
Fatal mistake: Readmill built a beautiful ebook reading app with social highlighting — share passages, see what friends highlighted, discuss books. Raised $1.5M from Creandum. Won Apple Design Award. Kindle (Amazon), iBooks (Apple), Google Play Books all dominated ebook distribution. Readmill had no ebook store — users had to import files. Dropbox acquired Readmill in 2014 for the engineering team (acqui-hire). Readmill shut April 2014.