Why not? I had a pretty elaborate setup in the house I sold during covid (fortunately the purchaser was enthusiastic about it) with a wiring closet in each win

Why not? I had a pretty elaborate setup in the house I sold during covid (fortunately the purchaser was enthusiastic about it) with a wiring closet in each wing and a fibre spine running between them. Not at all as elaborate an external connection as the author but I had a lot of machines and wanted to keep wireless bandwidth for things that moved around. One handy trick: I had at least one drop in each room, often one for each wall of the room. Behind the wallplate was a NEMA box with a conduit running straight down to the crawlspace (6' high in my house so hardly "crawl"). That made it easy to pull cable, not only initially but if I found I needed an extra run, which hardly ever happened. Instead of trying to run through a rat's nest of conduit the conduit was a straight shot and then the cables could easily be managed.