A big part of what makes the more commonly used of the apps bundled with macOS popular is how generic they are. Mail, Calendar, and Contacts don’t really push u

A big part of what makes the more commonly used of the apps bundled with macOS popular is how generic they are. Mail, Calendar, and Contacts don’t really push users to use iCloud for example… they’re just decent IMAP/CalDAV/CardDAV clients. Notes adds a few iCloud specific features but works well with IMAP accounts too. With Microsoft becoming thoroughly centered around services and monetization, they’re increasingly allergic to apps like that. If it’s not actively pushing MS services or showing ads to users they have a hard time justifying spending resources on it.