We support up to 1Gbps/100Mbps as a standard subscription on cable, with symmetrical connections available for an additional fee, except on 1Gbit, where the fastest upload available is 500Mbps.
Cable is alive and well, if properly maintained and upgraded.
I'm guessing it's a relatively small network, considering what I know about DOCSIS and how much would have to be upgraded to support uploads like that.
It covers the majority of urban and suburban Denmark, plus a majority of exurbs, anywhere an "antenna association" used to or still exists today and almost every apartment building. They are connected with coax through either us or one of our competitors, and there's mandated open access to coax.
Cable is alive and well, if properly maintained and upgraded.