I'm betting most are having the same results, maybe not that bad. I gave an example earlier, so not the first time you've heard of it -
https://www.namepros.com/threads/just-broke-25k-of-gtld-domain-sales-in-less-than-12-months.943015/
Spent $45,000, made $20,000. That's not including the renewals on 1,500 domains. So add that in to the loss.
Instead of Carol test and such, use this very basic one, profit - "a financial gain, especially the difference between the amount earned and the amount spent in buying, operating, or producing something."
Lot of people losing money hoping somehow this turns around in 3, 4, 5 years, those years seem to keep extending for some. We're in year 4 already, and reg numbers are dropping. Sales? The sales from NP thread, still dead. Some random one will pop up every and now then.