Internet connectivity in some parts is particularly terrible.
My grandmother's ADSL 12/1Mbit connection was never particularly reliable and would go down any time it rained for days at a time. Every 6-12 months it would go down hard and not come back requiring a visit - the techs would fiddle around, find a different working copper pair and get it going again.
Finally, about two years ago it died completely, and the Telco threw up their hands and said they couldn't fix it, there just wern't any working pairs. There will be, at some point, a FTTC rollout, but in the mean time we're getting her limping along with an overly expensive and even less reliable 4G connection. The data limits are absurdly low, so I can't afford to let Backblaze actually run backups.
But the data that was backed up prior to the DSL outage we want to keep - I'm paying the license for it, they should keep it.