Also to consider, SXM is a hub for connections to surrounding islands not damaged, a base for some smaller airlines and an airfreight hub. They also had transient and resident hanger space as well as full service aircraft fueling and repair vendors all generating revenue for the airport that was/is impacted.
"We are tied to the ocean. And when we go back to the sea, whether it is to sail or to watch - we are going back from whence we came." ~ John F. Kennedy