I used to work at a shop that had hundreds of X4100's running x86 Solaris 10. It was a pleasure to work those hosts. Solaris had some really cool stuff like ZFS, dtrace, Zones/Containers, SMF, etc.
And now you read the release notes with dread as you witness more and more functionality being dropped because they choose not to maintain it. Luckily there is FreeBSD
Yeah it’s a shame. If Sun would have made Solaris (both SPARC/x86) free sooner, they might have prevented the mass exodus of companies moving off to save money.
In retrospect, they should have gone down the Sun386I path back in the day, instead of changing gears and spending $$$ building up the SPARC architecture and ecosystem.