Great move and necessary to compete in the fast growing market of data-center automation. I hope that DC/OS gets as much attention in the open-source community as Kubernetes already does.
Nobody does containers better than illumos / SmartOS with Solaris zones. Battle tested, enterprise proven technology since 2006, and SmartOS just took it to the next level, and the level beyond next with Manta, and then a level beyond that with Triton.
That's your opinion and not at all fact. Solaris really? What year is it 1999? I know nobody that uses "illumos / SmartOS with Solaris zones" nor do I ever recall seeing it as a skill that either established companies or start ups are looking for.
Oracle being a lock-in and lawsuit heavy company make it any solution depending on them a high-risk one. That they tried to make illegal to do a clean-slate implementation of an API means they want to lock you in even more. It's best to just avoid using any I.P. from a company like that unless the licensing terms protect you in present and future.
Feel free to get your hands tied to a company like that. Whereas, there's alternatives for rest of us that are both capable and extortion-free.
So, it was started by a devious company. They tried to kill it off. It's being maintained and extended by a small pool of talented labor. Many of its features are migrating over to BSD and Linux. They have lots more work going into them. Also less risk of copyright and patent lawsuits in the future.
All in all, it seems that it's a dead-end, Oracle project that's probably going to stay behind the others in various ways with unknown risk from its parent company. And should still be avoided.
Great move and necessary to compete in the fast growing market of data-center automation. I hope that DC/OS gets as much attention in the open-source community as Kubernetes already does.