At 15Mb/s for a start-quality 4k stream (5 times higher than the average ISP speed measured by Netflix), that serves 53k simultaneous customers.
In the US, the fastest ISP for Netflix usage seems to be Comcast (https://ispspeedindex.netflix.net/country/us ), with an average speed of 3.6Mbps. That would serve an average of 222k simultaneous customers on a single server.
In the US, the fastest ISP for Netflix usage seems to be Comcast (https://ispspeedindex.netflix.net/country/us ), with an average speed of 3.6Mbps. That would serve an average of 222k simultaneous customers on a single server.