Even the basic Developer Program License Agreement includes this language:
"Apple reserves the right to change, suspend, deprecate, limit, or disable access to the Apple Services, or any part thereof, at any time without notice (including revoking entitlements or changing any APIs in the Apple Software that enable access to the Services). In no event will Apple be liable for the removal of or disabling of access to any of the foregoing."
The revenue sharing agreement further reinforces that you can't hold Apple liable for anything.
It's Apple's store and Apple's customers. They display your software in the marketplace and provide cryptographic signing so that end users can install it, but they can stop doing that at any time with no justification needed.