I think that we are seeing open-source exemplified working in full here. And it definitely signals that being 100% for open source will come with some losses.

>Basically Amazon screwing Elastic. Take their code and monetize it, not giving anything back. When Elastic changed their license to prevent it, Amazon forks it.

I do not see how Amazon is taking advantage of Elastic here. Elastic gave an offer of open source without compensation, Amazon accepted their offer, and now Elastic isn't receiving compensation. Simple as that.