Elastic is a 15 billion dollar MONSTER of a publicly traded company doing hundred+ million revenue per quarter. By market cap they'd be a ~top-20 biggest company overall and contender if not title-holder for the biggest tech company in the UK, Australia, and most other non-US countries. They are not some plucky feel-good startup fighting the good fight against nasty/unfair big-corps that are drinking their milkshake.
That multi-billion dollar corporation does not own ElasticSearch 7.10 any more than Amazon does. Elastic have taken 7.10 and released it under a new license that prevents others from doing stuff with it. That's allowed. You could do that too. It's allowed. And some plucky startup in a garage (or say, Google, or MS, or Amazon) could decide they'll make changes to 7.10 and release it open source. All fine. All allowed.
If your argument is that AWS is a form of mono/duo/oligo-poly and there are antitrust matters at play due to distorted market power being used illegally to crush a competitor... great make that argument.
Most of the other arguments boil down to variations on an anti-capitalist theme.