Which Starlink solves utilizing the laser links between satellites.

You're grossly underestimating the bandwidth needs of the site. You're not going to replace a cluster of fiber optic cables with Starlink.

10 Gbps in Ka and 100 in E band

>> We're talking backup vs. primary. Of course the backup is not going to be as good.

Then it isn't really a backup. A lower-bandwidth failover capacity is properly described as an alternative or degraded pathway. To be a proper "backup" a thing has to actually do the primary job at least temporarily.

aye. Starlink could be, best case, an Out of Band (OOB) management interface.

good for getting into the other side of a connection or doing some management tasks like back-up telemetry -- but we're talking SNMP, SSH connections to routers, etc, not GigE levels of data.

Starlink has an upload speed between 5 and 20 Mbps. The Svalbard cable is a 10Gbps link. It's still a major difference.

That said apparently they do have a satellite backup, just not through Starlink.

For a consumer grade connection. Why on earth would an enterprise contract be limited to those speeds??