You can still get VMS on Alpha. That's when they changed the name to OpenVMS, to point out the fact that they made it portable. In fact, you'll soon be able to get VMS on Itanium. I wonder how much of the portablility went away between the VAX-to-Alpha transition and now.

It's also interesting to note that Compaq just recently EOL'd VAX machines. You can still buy remanufactured ones from them, even.