I think doesnt matter sums it up well.
Sun/Solaris was great, but they got overtaken on all sides by commodity hardware.
In the late 90s they were charging more for a half-decent videocard (the elite3d and creator3d) then it would cost to spec out a full fledged linux PC with top of the line (at that time, Geforce TI cards) graphics.
That linux box would run circles around the Sun machine, both on number crunching and video performance.
They were (and maybe still are) great in entreprise grade really big iron, but other then that ...