Once the negotiation was successful, these factions would leave Treasure City. By that time, the city's strength would be weakened again. This was the scenario that the local factions in Treasure City were most unwilling to see.
However, there was no way to avoid this situation. Ultimately, it was impossible to force these powerful factions to remain in Treasure City.
Even if local factions were inclined to do so, they lacked the capability to. They could only hope that the star pirate group would be stronger than those factions and refuse their requests.
The star pirates never feared retaliation. If they were afraid of retaliation, they would not have taken such actions.
The star pirates plundered everywhere and did not hesitate to employ methods like void passages to control a large city under the jurisdiction of Honor Absent Palace. They did not care about Honor Absent Palace, so why would they care about these factions?