Yes, there are companies who are still using HP-UX and VMS in production on IA64. The current maintainers of VMS have created an x86 port so I would expect VMS

Yes, there are companies who are still using HP-UX and VMS in production on IA64. The current maintainers of VMS have created an x86 port so I would expect VMS sites will probably move over to it in the coming years. HP-UX is stuck on IA64, meaning that anyone using that platform has a more risky port to Linux if they want to move off IA64.