"As of 16/08/2023, Amazon’s checkout button for Kindle ebooks is labeled “Buy Now”. Just as on Steam you 'Buy' and on Steam it'll tell you the number of games

"As of 16/08/2023, Amazon’s checkout button for Kindle ebooks is labeled “Buy Now”. Just as on Steam you 'Buy' and on Steam it'll tell you the number of games you "Own". For books, I de-DRM them and I can then read them in other clients, notably The Books app from Apple.