I have a similar situation. My building has about 20 units. We each pay around €35/month for DSL. Why not install Starlink and share it throughout the building? In my case the local telecom ran coax to each unit about ten years ago. They claimed that it would allow high bandwidth internet, although I think few of us have ever used it, and instead use the old copper telephone wires to connect to the glass fibre connection in the cellar. Is there a way to use the coax cable to get Starlink to the individual units?