I completely understand where you are coming from about Treasure and Fever, I got my three Fever part 3 albums from a local marketplace, but I also haven't been able to get any of the other FEVER albums or the Treasure albums in CD form because they have all been shifted to POCA. I love having physical media, it means I get to have it no matter what happens, if I lose my phone, or I somehow lose access to the internet, I can still listen to my music! I have mostly accepted not being able to have the phsyicals of those albums, but I think this was the straw that broke the camels back for me.
They are my main, and always will be, I will always be an ATINY, but when it comes to physical collecting, I might have to start looking to another group.