Back in college, I did a hackathon where I striped data across different clouds like OneDrive and Dropbox so that even if one of the providers went down you would still be able to recover your data. Had the additional benefit of no single provider being able to read your files because none of them had the full data set.

Ended up not pursuing it but every time I see a story like this I think I should have.

If you're talking consumer, there are a plethora of solutions already that are much simpler. If you're talking enterprise, there's no way the cost will make sense for TBs of data as enterprise backup solutions have existed since forever.

I mean it couldn't be any worse than a stripped RAID setup and a HDD decides to blow up.