I'm pretty happy with this, since they are keeping the option to use the Elastic License. Now everyone can be happy. To me, it's weird that the AGPL is any more "open source" than the Elastic License. The AGPL requires you to publish all of your source code if you make any changes to the product; the Elastic License just says, "don't use our code to make a direct competitor to Elasticsearch". I find the former to be…
The Open Source licenses have been vetted and are time tested. That's one big reason for why Open Source is valuable. When you adopt an OSS project, you know exactly what you're getting, and the legal departments of corporations are prepared for it. Some are banning copyleft licenses, of course, for good reasons, but the knowledge is there.
Personally, I wouldn't touch the Elastic license.