Linux distributions are very similar to each other. Having package management as the main thing that sets them apart.
In illumos land these different distributions exist because they have very different design goals and visions.
But I agree that the illumos community is also a lot smaller and maybe (sadly) too small for each distribution to be commercially successfull.
I'm extremly sad about this announcement as OmniOS is a great operating system and the team behind it did a fantastic job.
As a user I like the minimal setup and clear stable releaes.
From what I've read the community is now thinking of possibly consolidating with OpenIndiana for that usecase. So while having less commercial supporters is a pity the community is determined to keep pushing forward.
