Ever since Apple introduced the Mac App Store developers have warned it plans to close off its platform, so news the company will insist on App Notarization in macOS Catalina set those critics off again. The thing is, it’s a little more complicated.
What is Apple doing?
Yes, Apple is making it a little more difficult for Mac users to install apps that aren’t sold at the Mac App Store or made available from bona fide developers happy to submit their software for the company’s speedy App notarization service.
Refer Here for Original Post and Source https://www.computerworld.com/article/3403011/wwdc-has-apple-closed-the-door-on-non-mac-app-store-apps.html#tk.rss_all