Didn't Worf say the Dominion could build ships faster than they could destroy them? That's why they went into the Dominion territory to destroy their shipyard and cloning facilities.
And I'm sure they have more in the Delta Quadrant to maintain their sovereignty over other subjugated races and worlds.
Plus the Dominion had no experienced pilots. That's why they were shooting them down like skeet. And they probably would have needed ships to protect other areas in case of invasion, which did happen to Betazed and Vulcan. If those 2,000 ships came through the wormhole, the station would have been in Dominion's control.
And I'm sure they have more in the Delta Quadrant to maintain their sovereignty over other subjugated races and worlds.
Plus the Dominion had no experienced pilots. That's why they were shooting them down like skeet. And they probably would have needed ships to protect other areas in case of invasion, which did happen to Betazed and Vulcan. If those 2,000 ships came through the wormhole, the station would have been in Dominion's control.