Thankfully I had a reasonable boss. Apparently the argument, "we can't design UIs, we can recreate how our users actually use our product" hadn't been tried before or at least hadn't been successful. Suffice it to say I put in an order that recreated the UX of our business users.
I shared this news with my peer managers in the department. They followed my tack, and soon enough at least 3 other teams were rocking decent equipment.
Then the VP got wind of it, and said, "No more orders for new equipment until the existing equipment is EOL", or something like that. You know, okay, I get it, we're talking a lot of monitors. But, dammit, people were just a little happier, or maybe just not as pissed off at one thing we could control.
I didn't even try to expense the 43" 4K TV I used for a monitor at home.