Just because some Sun people left, including some prominent ones, doesn't mean everyone left behind is a moron... it is insulting to many engineers who have been working on Solaris for many years and delivered (and still do) many interesting features. Then Oracle has been hiring in Solaris Engineering and the team is now bigger than during the Sun days.
Also, to suggest that Solaris is stagnating is pure ignorance (or worse). Under Oracle there's been a continues stream of improvements and new features. The main difference is that all of it is happening behind a closed doors so there is much less (almost nothing) talk about them in OSS communities. Which is a shame. If anything it is Linux still catching up to Solaris (both x86 and SPARC) in many areas. BTRFS is still years away to be in position to compete with ZFS (and see how ZoL is popular), apart from Oracle's Linux there is still no DTrace equivalent on Linux - yes, there is a bunch of other tools which can get the same job done, but usually it is much harder to use them and most importantly still risky in production environments. Solaris Zones (and now Kernel Zones as well) are still ahead of Linux containers. SMF is still much better and mature than SystemD. There is still no Linux equivalent to Boot Environments which are great (fast, reliable OS updates, etc.) nor to FMA, Solaris does fast reboot in a safe way and most Linux distros (commercial) do not have kexec (which is similar), etc.
Having said that in the foreseeable future the commodity market for server OS is down to Linux and Windows, and iit is not clear that it is Windows loosing the battle in enterprise... but if you need additional features then Solaris is often a better choice than Linux, and in most cases it is cheaper. You can run it on the same x86 HW as Linux and support cost is similar to RedHat.
Biting the hand that feeds IT
