Conway's Law is about how your organization's communication structures work, and how that inevitably leads to specific outcomes. That outcome is an eventuality for the team, because the team can't change the communication structure. They can design the best damn microservice in the world, and the resulting use of it could still be shit, because the other teams aren't necessarily up to snuff. And you still have all the baggage of dealing with those intra-team, intra-service issues.
It can be the cause or the consequence. If your team peels a microservice out of a monolith and assign a couple of developers to work on the newly-created service, those guys will be heads down on their work and focusing on their project.
If management does not go out of it's way to rotate people around projects, you'll end up with ad-hoc organizations around their service architecture.