I may be wrong. I'm reading into this that was on HN the other day--
"We collaborate with cloud service providers, including Microsoft, Google, Alibaba, Tencent, Clever Cloud, and others. We have shown we can find a way to do it. We even work with other parts of Amazon. We are always open to doing that; it just needs to be OK." https://www.elastic.co/blog/why-license-change-AWS.