Many customers don't need a backup, so it's up to each customer to arrange their own backups — perhaps with tools and services provided by the hosting company, or their own solution.
Running a company with no backup (for cost or any other reason) is very risky, as some people will have found out today.
The only good thing is that my backup was offsite.
Does OVH offer automatic snapshots for VPS? I know Hetzner does it for 20% addidation of the cost of the server. If they do the next question would be if they are destroyed too?
Here's more information on them: https://docs.ovh.com/gb/en/vps/using-automated-backups-on-a-...
With OVH the price can depending on the situation double your cost, if you've got a 3€ VPS and a 3€ backup configuration (as the price depends on size)
Also, if you’re hosting clients’ static websites, you were burning your money, there are way cheaper options out there (and fully managed).