SGI managed to hang on for quite many years after their 3D graphics workstation market tanked by pivoting from Irix/MIPS to Linux/Itanium (later x86-64)(saving

SGI managed to hang on for quite many years after their 3D graphics workstation market tanked by pivoting from Irix/MIPS to Linux/Itanium (later x86-64)(saving a lot of SW and HW development cost) and selling those big shared memory supercomputers. Sure, those were expensive boutique products, but they sat in their own niche that commodity HW couldn't easily touch. I think what ultimately doomed this was that with increasing core count CPU's the market that really needed much bigger shared memory systems became smaller and smaller. They were finally bought out by HPE, and while HPE still sells their Altix brand I hear the development of the shared memory supercomputer line has ended and now the Altix memory fabric has been utilized in the enterprise Superdome line.