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I say look up the Oracle SPARC roadmap from 2011 when Oracle first acquired Sun and the SPARC/Solaris team and compare to what has actually been delivered and you will see that Oracle has actually delivered new SPARC CPUs quicker to market and at much higher performance than the roadmap estimates portray.

Since the Sun acquisition in 2010, Oracle has released a total of 8 different generations of SPARC processors (Intel is on its 5th generation since Nehalem in 2010) having increased CHIP performance by atleast 10x on SPECint2006rate and 12x faster/core on OLTP showing a full 2x faster/core than the latest Skylake, how long will it take Intel to catch up with its ~15% increase every generation? Also, look at the Solaris releases. Oracle released 4 major updates to Solaris in the last 7 years having delivered leading edge technologies like:

Integrated hypervisor

Kernel Zones

Fully Integrated OpenStack distribution

Full Automation of software patches and updates, and other packaging improvements

Software-defined networking

Live migration of Solaris Kernel Zones

InfiniBand support for Kernel Zones

Virtual Clocks for Solaris Zones

ZFS LZ4

SMB 2.1

Private VLAN

VNICs on IPoIB

Periodic and Scheduled Services

Tailored Compliance Reporting

OpenBSD 5.5 Packet Filter

Deferred Dump

Integration with OpenStack Juno

etc...

And wait to see whats in Solaris 11.4. Its 5+ years ahead of Linux.

Please help me understand which other OS out there has such developments and advancements and is as integrated and complete as Solaris?