you are not understanding. why is it not open? Who is the authority of "open". Why is CockroachDB not open? I can see their source on GitHub.
"open" is not like 1+1=2. ultimately it is arbitrary. one definition of open is "to make available", by that definition all of them, including CockroachDB are "open".
open does not necessarily mean you can use it, just like how an open door does not necessarily mean you can enter the house.
in any case, we can agree to disagree.