Wow.. The author's book apparently was not allowed on Apple Books because it contained the word <i>Leanpub</i>. That's...pretty sinister.<p>Incidentally I learnt that "in 2020, Apple’s app store commission revenue was close to $15bn, which was larger than total global revenue from the entire digital music industry... Around 90% of this revenue comes from games, and almost all of that comes from in-app purchases."<p><a href="https://www.ben-evans.com/benedictevans/2021/5/13/apples-ads-music" rel="nofollow">https://www.ben-evans.com/benedictevans/2021/5/13/apples-ads...</a>