How Microsoft Lost the API War - Joel on Software →
https://marco.org/2007/04/26/how-microsoft-lost-the-api-war-joel-on-software
This is almost 3 years old, yet it’s surprisingly relevant today (lots of discussion about “Longhorn”, which you probably know as Windows Vista), and it’s one of Joel’s best articles. It’s amazing how little has changed since the time of its writing.