I'm lucky if I even get that without supplementing with intentional exercise and I guarantee I walk more than anyone else in my office (during the work day)

I'd agree with that. Unless I'm trying to increase the amount I walk, I usually come in under 5K steps a day. It's not at all hard to add a few tasks to get it up to a more reasonable number, and I do, but if I don't intentionally add those tasks, the baseline is very low indeed.