DOCSIS 3.1 is pretty awesome. I heard 4.0 is in testing. Fiber (FttH) is similar to coax in that many subscribers are attached to one head end device. Subscriber throughput is determined by the number of subscribers and the speeds they ordered on the shared resource. Although fiber is leading in total capacity per OLT/PON, it’s not like coax can’t achieve excellence subscriber speeds by just deploying more head end devices with fewer subscribers on each.