[myth_buster]

There behavior with Elasticsearh [0] seems similar to what they did to sellers with Amazon Choice and their other knockoffs [1].

> When Amazon announced their Open Distro for Elasticsearch fork, they used code that we believe was copied by a third party from our commercial code and provided it as part of the Open Distro project. We believe this further divided our community and drove additional confusion.

> Recently, we found more examples of what we consider to be ethically challenged behavior. We have differentiated with proprietary features, and now we see these feature designs serving as "inspiration" for Amazon, telling us their behavior continues and is more brazen. NOT OK.

0: https://www.elastic.co/blog/why-license-change-AWS

1: https://archive.is/9TIu6

[t0mas88]

Elastic tried to use open source as marketing and then cripple the open source version by making things like access control and encryption only available in their non-open source version. That's of course completely within their rights, but you can't complain if AWS recognises these things as important to their customers and adds them to their version. It's nice of AWS to open source that, they wouldn't even have to do that according to the license.