That's largely true, but there definitely have been incidents/drama in the recent past. Two that come to mind:

https://www.postgresql.org/about/news/statement-from-the-pos...

https://www.postgresql.org/about/news/trademark-actions-agai...

Also worth considering that EDB is backed by Private Equity, and there was some other very recent incident that seemingly directly resulted in OtterTune folding.