I think primary concern is will DucDb pull something like RedisLabs. Wherein they are open source till it gets enough traction and after that pull the rug.
To be fair, the “traction” here was AWS using their massive competitive levers to kill RedisLabs’ long-existing (and quite reasonable/tolerated by open source) monetization avenue, risking the continued funding for redis.
To characterize this as a rug pull is unfair IMO.