At first glance this look special, but then I noticed this section, which is commonly seen in some of the enterprise firewalls.
Complete device protection with award-winning security.
Included with every Norton Core is a one-year subscription that protects your entire home network, unlimited IoT devices, and up to 20 PCs, Macs, smartphones and tablets, giving you a comprehensive solution designed to shut down malware, hackers, viruses and more.
Norton experts help keep your PCs, Macs, smartphones and tablets free from viruses.
In short, they have the ability to push down a client software (which in this case must be a Norton Antivirus or something similar) to be installed in your device, same as what you’re doing now with any AV software. From there it can centrally manage scanning, updating of database etc.
I think the unique part for this is mainly the ability to centralised manage. Costing wise should be the same as buying a router + anti-virus subscription for each device.