Apple's apps bypass firewalls like LittleSnitch and LuLu on macOS Big Sur

Apple has been more and more acting on the belief that when you buy one of their devices, you don't buy and own the device. You rather purchase an experience—a service—from Apple. They don't have to let you run your own software on your device or poke around the internals. That is not part of the experience offered. You should use the device as Apple intends it to be used.

Device-as-a-Service is an excellent way to describe the Apple ecosystem.

For better or for worse, this has been Apple’s philosophy since forever. Steve Jobs himself said, “[users] are paying us to make these choices”.

https://youtu.be/rKPEK9BSIhA