I'm sure there's a good argument why this isn't feasible, but I'd like to know the details.

Item 1: The recent DEN shutdown was a royal mess at the "all weather airport" and across the nation.

Item 2: Railroads heat track switches to keep lines open in all temperature conditions.

Item 3: A track switch occupies a tiny area compared to a runway.

Has anyone looked at heating runways when warranted? What would the cost be?