Microservices solves the problem rather than creates it. With microservices the scope is reduced fundamentally therefore collecting the necessary information to deliver the product becomes N teams all working independently on their own microservices. A product is built on top of microservices, call it a composite microservice which combines others. Teams still interact using microservice interfaces, and individual teams are still delivering they value specific to their service, but at the end of the day you’ll end up with a platform.

PO is part of the team.