It's not up to them to safeguard their stuff. While you may have heard moderators all over write "we only lose what we don't backup" here's a rather famous other fellow about the cloud.
TODAY, I'm running into folk that used ISP WEB EMAIL for years and then they move or something happens and their email is gone. Another cloudy day.
Here's a Great reason to make backups of your work.
Folks here @ Cnet have been preaching to us for years about this.