I would say no. I think they should go public domain, as that's the future.
One of the funniest/best business models out there is SQlite (https://sqlite.org/copyright.html). They give it away to the public domain, but some lawyers wrongly claim that that is not enough, so they will "sell" you a warranty asserting it is all public domain.
One of the funniest/best business models out there is SQlite (https://sqlite.org/copyright.html). They give it away to the public domain, but some lawyers wrongly claim that that is not enough, so they will "sell" you a warranty asserting it is all public domain.