> I mean, cap'n'proto is written by the same person who created protobuf

Notably, Protobuf 2, a rewrite of Protobuf 1. Protobuf 1 was created by Sanjay Ghemawat, I believe.

Google loves to reinvent shit because they didn't understand it. And to get promo. In this case, ASN.1. And protobufs are so inefficient that they drive up latency and datacenter costs, so they were a step backwards. Good job, Sanjay.