I think the Sun leadership at the time wanted ZFS to be on Linux up to the point of licensing it under the GPL. The employees wanted a more BSD-like license[1], so that's the correct context under which you can look at how Solaris was licenced. It's not about being in Linux or not, it's do we want Solaris to be under a more BSD like or GPL license. I think this conversation was bigger a decade or more ago, and frankly the GPL has had more commercial success since then. If Solaris had been GPL'd is an interesting thought experiment, and too bad it's just that. Netbeans was GPL and CDDL dual licensed.

I wonder what Linux Torvalds thinks about merging ZFS into Linux now, he wasn't too keen a decade ago. Sun is no longer around, someone worse like Oracle has taken their place. A couple of lessons for the open source community here, I think. And Brian Cantrill nails in on the head in the youtube video link.

ZFS will need to be on Linux first before it can show up on Android or media centers or gaming consoles, and I don't doubt Oracle's ability to find a way to patent troll anything. But it will be just that: patent or copyright trolling.

[1] https://en.wikipedia.org/wiki/Common_Development_and_Distrib...