"Have" being the operative term, they HAD one in Cincy back when. Now, our house built in 1987 had an NG furnace, the restriction had been lifted by then.
It also had an "on demand gas water heater" (tankless) which turned out to be very finicky back then. We even had two gas fire places.
We don't have gas here except for the large tank making hot water on the roof, which I find a bit odd. Fortunately these heat pumps are very efficient.