There is one way

In the end, none of those four wanted to be the first to attack. That meant they would receive the greatest losses during the subjugation of the royal family. Besides, chances were that they would be wiped out by the others once things settled down due to their lack of strength.

Lrist agreed with Roan, saying, "Joining forces to attack at the same time is also out of the question. These four already don't get together. Who can guarantee that one of them won't betray the others and cause a collapse? That's how this balance was kept. Not to mention that the Jhiod Continent is financially supporting this balance. Whoever starts to lose ground, the Jhiod Continent comes out and helps them."