What do you want to bet that a lot of their stuff is running Win2K or earlier?
I wouldn't bet the farm, but would make a bet this was the case. I've been retired from IT for some years now, but saw this in action first hand with scientific equipment. The vendor ceases operation for whatever reason and third parties come in to fill the void. They can manage the hardware failures, but aren't able to upgrade the software to new operating system versions. Putting those systems on the internet was verboten back in the day..