Comment by drewdevault

Substantial portions of Redis were written by AWS and Google. People are upset because Redis is a collaborative project with many people working on it and Redis Ltd wants the sole right to commercialize the work of an entire community.

LWN has a good overview:

https://lwn.net/SubscriberLink/966631/8bc9d155d4e2afb3/

Redis Ltd is only responsible for about 20% of the work.