This article worries me a bit. First, the Navy has successfully demonstrated a kill from a sea-based missile. By all accounts, the Navy is mating existing hardware (Aegis Cruisers & Standard SAM-3 Missiles) with a new kill vehicle. All this is being done on-time and on-budget (if you believe the written accounts).
Now along comes another supplier with a completely different land-based system involving a totally new missile/kill vehicle and they want the Navy to buy it virtually sight-unseen. Will the new missile even fit into the existing vertical launch systems on the Aegis ships? Big mistake gentleman! Maintain the objective and go with what works!
Good observation. Maybe they're looking at future costs, one system is cheaper to support than two. As I understand it, the Navy system is rather limited in range.