I would have to guess that it has been equally frustrating for them.
I wrote this one off when I received the offer a while back to exchange my reversal film reward for the black and white film. I have plenty of black and white film options so I didn't take them up on that offer but I kind of sensed at that point that color reversal film was a dead issue.
Too bad since it would have been nice. At least we have Ektachrome.