That's true. But at the same time, the risk is kinda overblown. You can still use the last open version of Redis. There's even an open, community-maintained fork that you don't have to maintain yourself.

Even GPL can't force a company to maintain and keep developing an open version when the company doesn't want to. Even if Redis was GPL (no CLA), they could still abandon it and write a compatible clone from scratch. AI makes it even easier to do