[Xylakant]

How is the elastic license any more compatible with the needs of other open source projects than the SSPL? Before, elasticsearch and/or kibana were usable together with (A)GPL licensed code. That’s no longer the case, neither under SSPL nor under the elastic license.

The fact that most users use the basic license may well be explained by two things:

A) Your website offers it as the primary download.

B) Elasticsearch without the basic licensed modules lacks severely when it comes to security features. It doesn’t even offer basic auth, let alone TLS or similar.