oversubscription is a necessity in the economics of last-mile consumer grade ISP services no matter what the tech: ptmp wireless last mile, docsis3 cablemodem o

oversubscription is a necessity in the economics of last-mile consumer grade ISP services no matter what the tech: ptmp wireless last mile, docsis3 cablemodem on coax, gpon/10Gpon fiber last mile, dsl, active ethernet fiber last mile, geostationary consumer grade ku and ka-band vsat, starlink, etc. if you look at the traffic usage charts from 50 houses on residential last mile gigabit connections the average customer really doesn't move that much data. you'll get the occasional outlier such as a person who is really enthusiastic about torrenting 75GB 2160p movies but when averaged out over a group of dozens or more customers it's generally a non issue. the danger is in oversubscribing your network to the point at an unreasonable ratio that the ordinary end user starts to see bad packet loss, jitter, latency, slow speeds, etc.