Definitely not intending to take credit away from any other teams. There are so many good Postgres extensions and forks in this ecosystem.

What we've done is add a Columnar storage feature into the Citus open source extension to Postgres, as part of Citus 10.

One way to think of it: Citus 10 now gives Postgres users (those who are also using the Citus extension) a columnar compression option, for use on a single node and/or a distributed Citus cluster.