Yesterday's war was not decisive. Duke Conrad and his allies had experienced a crisis and lost a lot of power. But that doesn't mean they have completely lost. As long as they still controlled the capital, it was possible for them to re-consolidate their power.
In addition, the port was also in the hands of Duke Conrad and Prince Lewis. They could get more supplies from elsewhere as long as they still controlled the port. It was this advantage that Duke Balzaac and prince William lacked.
On the other hand, this advantage is also held by Starfall. From the start, the area that Isaac managed was a strategic area. There is a big river that empties into the sea. The place was suitable for building shipyards, creating ships, and providing ports for merchants and military purposes.
But the kingdom has given up on developing this area. Building this area is far from the capital and costs a lot. That's why they let this place remain isolated for so long.
