The answer is yes, and it's a practice widely used in the industry to distribute signals to multiple destinations without degrading the signal quality significantly. From a technical point of view, it is reasonable to connect multiple households or units to a single fiber optic internet connection. What is Fiber Line. Last mile equipment is cheaper, and will probably operate around 10-40Gbps; long haul fibre runs will have the big equipment on it, and some companies clain to have DWDM running at 1Tbps. Theoretical maximum is 1 petabit per second. Running fibre costs a huge amount of money for an ISP to install. I have two BT accounts using my 2 separate email addresses and two separate monthly bills with a broadband account on each (and a working landline telephone number on each). One reason I like to keep them is homeworking - two of my sons who live here work from home 2 days a week now due to covid. Yes, you can connect two routers to one fiber modem, but understanding the 'how' and 'why' is crucial for optimal network performance.
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