In the mid 1990s when my parents were building their house, I absolutely could not understand why my dad had me spending the weekend pulling a cat5 cable and 2 coax cables through the studs. The coax ended up being a bad bet, by we got a LOT of value out of that cat5. Even with the advent of wireless much later, we still needed Ethernet to connect access points to the main router.

That was probably our only good bet, though, so I still agree with the punchline!