I remember one investment bank I worked for, starting:
IT tech: Would you like a Sun workstation?
Me: Nope, I would like a top of range Windows PC, with two or more screens.
IT tech: Yeah, OK, all the traders say that too. We're throwing those Suns in the dumpster.
They’re still out there. Maybe not visible to normal folks, but I know for a fact until very recently the Chicago Mercantile Exchange used their hardware in great quantities— maybe even as the underlying hardware for their matching engines, though I admit this is conjecture on my part. They don’t exactly let exchange customers in those rooms!
I miss their 10k & 15k chassis. Solid kit for their day.
What's left of Sun is basically a startup founded by a few ex-employees, some open-source software, and the rest of their IP being milked by Larry Ellison.