Really, they should only be able to sell 50mb/s service if their network can provide that to all of their users on at any point in any average day.
All residential ISPs are over subscribed. If they could provide the full bandwidth to all of their customers simultaneously, then most of that bandwidth would go unused.
And also that would make residential connections expensive as hell and waste resources on every step on the network. I’m on a relatively small ISP but still have symmetric 1Gbps connection. If every customer even on this small ISP had their full bandwidth available to everything all the time they’d need at least several Tbps combined capacity which would take considerable chunk of all the capacity we have on the whole country to abroad just to serve few thousand houses.
All residential ISPs are over subscribed. If they could provide the full bandwidth to all of their customers simultaneously, then most of that bandwidth would go unused.
And also that would make residential connections expensive as hell and waste resources on every step on the network. I’m on a relatively small ISP but still have symmetric 1Gbps connection. If every customer even on this small ISP had their full bandwidth available to everything all the time they’d need at least several Tbps combined capacity which would take considerable chunk of all the capacity we have on the whole country to abroad just to serve few thousand houses.