At the very least this company learned a hard lesson about Disaster Recovery best practices. Hopefully all the up and coming companies reading this story learns as well. Also please remember that a backup that isn't tested IS NOT A BACKUP! I've been in so many situations where backups were corrupted, so part of the disaster recovery is to test the backups and make sure you can really recover.
There are a million different scenarios where their data could be lost and it not be Digital Ocean's fault. It's the company's responsibility to have protected their customers from this.
I worked at a company with no real Disaster Recovery plan. I was told that "we can get the servers up and running within 18 hrs if we had an outage", which not only was absurdly slow but probably an underestimate. Only by the grace of God did we not suffer a real outage but if we did, it was totally the VP's fault for not addressing my concerns.