I liked Sun, but lets not worship them more than they deserve.
Just like had it not been for Oracle, anyone doing Java would be porting Java 6 code to whatever would be the hot replacements.
And yes they care more about Oracle Linux than Solaris, just like all remaining UNIX vendors have switched to GNU/Linux as cost reduction on development costs.
I give you Sun’s management pre-acquisition was utterly stupid, but their hardware design teams, which continued under Oracle until being disbanded in 2017 or 2018, was nothing short of stellar.