Apple has always been seen as a company that puts its services ahead of those of competitors, especially when we talk about iOS. In Apple's operating system we can install thousands of email applications or Internet browsers Apple's official version is the default setting and cannot be changed.
This means that if you click on the link sent to you, this link will open in Safari, and the same thing happens if you want to send something you received via email, the system app is the one that appears. But this could change because as recently reported Bloomberg
Apple can unlock your system
According to the information, it is likely that with the next major iOS update, possibly iOS 14, Apple has partially unveiled its plan for other developers and allow users to select third-party apps as default apps
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But not only that, moreover, Bloomberg report that Apple is also considering opening a HomePod on third-party music services such as Spotify. Currently HomePod can only interact with Apple Music, playing content from other platforms should send it via Bluetooth from your iPhone or iPad.
This is good news that will give users more freedom in choosing their favorite apps, although that is true Apple allows any mail application or internet browser
However, Bloomberg emphasizes that this Apple vision is still developing and "no final decisions have been made," so it may take some time to see this change.