> Look at how AWS destroyed the entire ... PostgreSQL, Kafka, etc ecosystems

Err, I think you need better examples, as the PostgreSQL ecosystem is doing just fine, and RDS doesn't threaten anyone's IPO price. Since Kafka is not only Apache licensed but is an Apache project, I gravely doubt that the Apache Foundation is going to IPO anytime soon either

If you want to pick on two other ecosystem casualties by the Big Bad AWS Gonna Steal Our Shit fearmongering, use Sentry and Sourcegraph as examples of "we want the community until we don't" rug pulls