> Cortex is used by some of the world’s largest cloud providers and ISVs, who are able to offer Cortex at a lower cost because they do not invest the same amount in developing the project.

> ...

> All CNCF projects must be Apache 2.0-licensed. This restriction also prevents us from contributing our improvements back to Cortex.

I read this as "Amazon has destroyed the CNCF by not playing nice"