I was getting started in the field right around the time this was written, attending college (and later being employed) at a university that was an all-DEC shop. I wound up being introduced to VMS and Unix at the same time. I greatly preferred Unix at the time, but looking back on it, it was for a completely different set of reasons than I would apply now.
The biggest was that I wanted a machine of my own to work on, not just a shell account on a big Vax with a tiny quota. The price of the lowest-end, used machine with a hope of running vms at a decent clip was astronomical, upgrades were proprietary and expensive. I think the machine in my office at the time came with a perpetual single user vms license, but if I wanted to create shell accounts for my friends, buying license paks was also quite expensive.
If I wanted to, say, run irc on the vaxstation, instead of the handful of popular clients that one could build on Ultrix, there was a single vms port, and to build it would require licensing a compiler. Downloading the source would require buying the tcp/ip module license as it would be years before that was bundled in.
So if I ditched the Vaxstation and got one of the MIPS based DEC pizza boxes, I could put Ultrix on it and at least get the GNU toolchain installed and be able to build and run a bunch of the software I wanted. My older colleagues who preferred working with VMS would spend weeks attempting to port some popular utility to VMS, which seemed goofy to me at the time.
Within a couple of years 386BSD and Linux came along, and my plan to save up the 5kUSD or so to buy my own DECStation quickly vaporized when I saw that pretty much everything I wanted to run on Ultrix would build on Linux, so I certainly had no more interest in VMS after that.
Now a couple of decades later, I sometimes think about the things that I desperately miss about products like VMS. The expansive, exhaustive documentation. The robustness of the systems in production, the great interoperability between the various compilers.
We also got pretty amazing support from DEC, but the amount of money that we paid for all those things was breathtaking. If you were using custom software for critical businesses or processes, it was not a terrible arrangement, but if you wanted to stick an email server in the closet of your small business and you weren't already a fan of VMS, it would have seemed crazy to choose one of those boxes. They were very much a premium product in a space where developers with DIY tendencies where suddenly being presented with heaps of cheaper choices, even if they weren't as reliable or well-documented.
I'm very curious to see what becomes of the x86_64 port; now that I'm a little older, more patient, and have a few bits of software that I'd like to stay running all the time, it might be nice to have the option. I think I even remember enough DCL to get around :)