Where do you get that idea from?
Here's what most likely happened with Zoom: Some developer said "It would be great if we could do X, but it doesn't work". His manager said "I could ask Apple if they can make this possible. Write a document stating what advantages it would have for our end users if you could do X". Developer writes the document, manager passes it to Apple, someone at Apple decides it's a good idea, and gives permission to Zoom.
Meanwhile at the Microsoft Teams team: Either no developer thought about X. Or they didn't talk to their manager. Or the manager told them to shut up and do their job. Or their manager told them to write some document, but the developer never did. Or the manager left the document on his desk. Or the developer's document was so abstruse that nobody at Apple could figure out what he wanted, and therefore nobody could figure out that they actually had given Zoom the exact same permission.