If your business depends on it, not backing it up in some other place on a consistent basis is a bad idea. The cost of this should be factored into the price you charge people. 800GB would be less than 20 dollars on S3, all you have to figure out is the replication process, but that shouldn't be rocket science either.

800gb is nothing. You should be backing it up.

might be a little too late now.. also idk if cloudflare even supports backups, i'd have to make my own

It's a hard lesson to learn like this, but it's a learning moment nonetheless. You don't rely on your provider to make backups for business-critical stuff like this, you need to manage it (and test!) it yourself.

rclone[1] supports tons of storage providers. If you get access back and recover your business, start making backups onto other providers.

[1] https://rclone.org/

I would say the lesson is just use AWS which has outstanding support. Building backups yourself, going multi cloud or else just erase the benefit of CF. If you do this you can just run on a bare metal and save on cloud cost.

AWS is very good, but you could get locked out there too. With no backups in another place, the ability to do disaster recovery is at risk.

Cloudflare-managed backups wouldn't help you against Cloudflare revoking access.