[FFX-ME]

It is being done, slowly they are changing major highways to concrete instead of asphalt and the same is beeing done for airports.

JFK's main runway is half concrete
O'hare also has many runways that have a concrete mixture
Heathrow has grooved asphalt which increases friction
Pearson has a half concrete runway

They are changing them slowly but it is difficult for high traffic airports due to the fact they need their runways to accommodate the traffic. Changes that large can't come overnight, they are expensive and time consuming. Your comment is absolutely fallacious.