Earlier quoted context omitted.
What’s the problem? 99% of Mac users would never download and use those apps due to convenience. But if Apple builds the features into the OS, it will get used much more and benefit the users. I don’t use a password manager. I refuse to pay a subscription for one. Yet, I’ve been wanting Apple to convert Keychain into a real password manager for a long time. They actually did it and I’m happy.
I think there is a significant ethical issue related to inviting others to build software on your platform, prove that software’s market value, and then you under-cutting them by creating your own version of it for free to increase sales.
Something like window snapping has been out since Windows Vista or 7, I forgot. If you make an app to do this on macOS, you would have had nearly 20 years to make sales.
To me, these apps don't have any moat anyway. Developers for this category of apps should already understand that if it's essential, Apple or Google or Microsoft will integrate it into their OS eventually.