[robespierre]

SUN had much larger market penetration than SGI ever did. By orders of magnitude higher.

This market report from SunWorld in 1996 says that Sun's market share was between 4–5 times SGI's. Almost five times as many machines but just four times the revenue (reflecting Sun's heavier focus on entry-level workstations like SPARCstation ELC and IPX).

You could argue that Sun's workstation business lasted longer, but I think they actually were active for exactly the same period. Both companies were formed in 1982, and their last real workstations (the Tezro and the Blade 2500/Ultra 45) were in 2006.