I work for an isp. We do not move main equipment around. Reasons are we do not know how good the lines are in your house and if there are any splices, splits other type of cable in the house. DSL service.
plus with the fiber there are multiple pieces of equipment in play.
What we do to an extend it run a few lines and install a wifi extender.
prime example is my house. Just the coax they used rg59, with 5 4 way splitters. not even a proper end just strip, sick it and electrical tape it. It should hold. And those cheap rca splitter
what is the speed you are paying for? there is a certain point were the grade of equipment most isp use cannot preform to peoples requirements.
if you can look at running a few cat5/6 runs around the house, will make it easier to add devices like switches and not rely on the converting technology.