Amazon Corretto and Eclipse Temurin are developed and licensed by Oracle. They are just packaged and distributed by Amazon and IBM respectively. If you report an issue against them, the Amazon/IBM people will forward the issue to us at Oracle to resolve.
BTW, I don't dispute that Oracle is greedy, but I find the suggestion that Amazon, IBM, Google, MS etc. are any less so laughable.
Sure, that could stop to maintain it, but would put the power immediately in the hands of other companies with a fork
That said, you always have oracle's greediness...