This would depend on whether the limit is defined as ingress or egress or both. For example AWS has free ingress traffic from the internet but there is a cost for egress traffic to the internet.

A better solution would be to find a unmetered service, which means that you have a fixed transfer speed (e.g. 500 Mbit) but have unlimited bandwidth. OVH offers this in their VPS products.

The fiber we use at our datacenter is quite flexible but still gets damaged if you bend it too far. To roll it like they describe you would still want to have a fairly large drum (probably like 3-4 inches in diameter) which would make it pretty bulky for a small drone.