I believe the OpenBSD community of developpers is not too concerned with popularity or integration with vendor's hardware. They are more concerned with doing things right (or, some would say, doing things their own way).
Nevertheless, there are some small companies selling things based on OpenBSD - even though, I'll admit, they are mostly companies started by OpenBSD developpers:
And, of course, there is always the strong possibility that some people are using OpenBSD while keeping it hush-hush and "under the radar" -- maybe even under the radar of their own management.
I would certainly say "doing their own way" rather than "doing it right", and I would never say "wrong", for most values of wrong. I'm merely pointing out to the OP that other than the "side projects" (e.g. SSH), there is for all practical purposes zero uptake of OpenBSD in the commercial networking space. Yeah, there are some very niche players and lots of DIY folks, but that's not what was being alleged.
Nevertheless, there are some small companies selling things based on OpenBSD - even though, I'll admit, they are mostly companies started by OpenBSD developpers:
http://www.openbsd.org/products.html
You can also get some consulting & support:
http://www.openbsd.org/support.html
And, of course, there is always the strong possibility that some people are using OpenBSD while keeping it hush-hush and "under the radar" -- maybe even under the radar of their own management.
Make of this what you will.