In short: I want to install any App Store app directly from the Safari address bar.

Sometimes when I type the name of an App Store app in the Safari address bar, the Safari address bar will show me a dropdown with the option to install (or open) said app.

Mac App Store
Name of app                    Open
Category of app
Rating of app

For example:

However, when I type Xcode (Apple’s own editor) it won’t show the dropdown, but when I type appstore Xcode it will.

Why doesn’t it show this dropdown for any App Store app (name) I type in the address bar?
Can I enable that — or is there a specific pattern I should type it in?