Back in 95 we were hunting down ISA NE2000 compatible card with coax connector all over the place. Why? We starving college students were building a dorm network to play Warcraft 2 and to share a dedicated modem phone line. Hub (not even switch) were expensive and is difficult to route for 8 rooms across the building, and made the coax cable a great choice. All it takes is one cable across the roof to the other side, a few Ts, and 2 terminators.
Until someone is stupid and disconnect his PC the wrong way, and split the network in half.
We brought this setup into our apartments next year and the cable guy though we were stealing cable TV, and cut it.