IMO the real problem with microservices comes from dealing with distributed state - going from one data store with usually strong consistency guarantees - to ma

IMO the real problem with microservices comes from dealing with distributed state - going from one data store with usually strong consistency guarantees - to many distributed stores that have no way of ensuring they are in sync is the hard part. RPC vs local calls is trivial in comparison and you can get that level of transparency out of the box with functional programming - it's just data in data out.