Microsoft tried doing that with the bi-yearly Windows 10 feature updates, and now they are moving to a yearly release cycle because there were too many bugs get

Microsoft tried doing that with the bi-yearly Windows 10 feature updates, and now they are moving to a yearly release cycle because there were too many bugs getting into releases even with an army of "insiders" (although it should be an army of QA people that are in Redmond). They don't release major updates to system applications between releases either (The rewrite of Edge and WSL2 are planned for release 20H1). The real problem is that Apple needs to loosen the secrecy between engineering teams, as there's no good way to tell if your new Safari feature breaks something in System Preferences because the System Preferences developers are in another building and aren't under the right NDA to learn about your new Safari feature.