[proddata]

> This begs the question: isn't "a restrictive OSS licence" not less "fully open source" than a more permissive licence like GPL, MIT or BSD?

We gonna change CrateDB fully to Apache License v2 ;) I would say that counts as a "more permissive" license.

> Is that really only because of some enterprises not liking GPL?

There are various reasons for the change. A big part is definitely also the spirit of many our contributors. We built CrateDB on open source software and also want to make the software available as open source. It also was planned for quite some time to be more open.