Oh yeah, I know that these sites become expensive, which is why I would wish that the owners would facilitate the transfer of files to AO3.

With TQP, it's just that I didn't see any warning messages that it was going down. I had just visited there a few months back and it was still up. With THF and HPF, I saw mentions in fandom spaces that these archives were at risk. Maybe I just missed it for TQP. I dunno.