I'd be extremely interested if someone has managed to do this with platform-wide product features. For example, take all login procedures across Microsoft produ

I'd be extremely interested if someone has managed to do this with platform-wide product features. For example, take all login procedures across Microsoft products. In my experience, this is super difficult to pull off. Individual teams don't know enough to make the right decisions, as login, recovery etc is really complex under the hood, so you need a central team handling that (even and especially the UI - you may want to have a login button appear in the same place regardless of which product you use). Having a platform-wide team controlling (part of) the OKRs of a large number of other teams does not work great, because to those teams, enforcing company wide mandates feels like a priority inversion, and is often countered with passive-aggressive behavior. I'm not too familiar with Apple product internals, but the apple ecosystem feels overall coherent. Maybe they managed?