It's incredibly frustrating. The Internet Archive offers a Vault product, where you pay $2-3/GB one time for perpetual storage into the future of your collections, items, media, etc. This pricing was previously predicated on the cost decline curve of storage. It's gotten a bit more expensive due to the AI bubble inflating the cost of storage, but to your point, the Internet Archive is a superior custodian than some rando tier 2 cloud provider who won a contract from a non profit and will lose all of the data when they go bust.

https://archive-it.org/vault/

(huge fan of Stokes as a fellow archivist, recommend the documentary on her: https://en.wikipedia.org/wiki/Recorder:_The_Marion_Stokes_Pr...)