Does anyone have a list of cloud storage services that will accept BTC? which one is the best? I think someone had a non KYC list which had some.
I don't know about a no-kyc list, but you can check this thread
[1] for cloud storage services that accept BTC, the members who contributed in that topic mentioned a few cloud storage services that accept BTC.
Also, what happens to your files if you forget to pay? they delete them or they keep them? I have never used this.
I believe it depends, some services would give you a period of grace before it would be deleted, and some may not delete your data, but you would be unable to add or store any new data or file.
[1]
https://bitcointalk.org/index.php?topic=5437078.msg61667899#msg61667899