> That might not be legally relevant but it is certainly ethically relevant.

I don't know if it's ethically relevant. I'm sure there was someone named Matt Damon before the actor Matt Damon, and maybe that guy was even an actor, but I wouldn't say today's Matt Damon is ethically violating ancient history's Matt Damon.

What is the right rule for abandonware? It can't be, whoever got there first. Anyway. I don't buy your timeline. Redis-rs comes after the name Redis, certainly, which these guys now own. It doesn't matter when these two events you picked out of a hat occurred.

Analogies are not arguments. Just made up scenario.

Hollywood has very strict rules regarding names. If your name is identical to the name of another actor, you must use a variation or alias.