After his planet opened up to the universe, its population grew rapidly. The average level was still the same for now, but it would soon increase quickly. Those who didn't push themselves to their limits would simply be left behind by others who put in more effort.
Along with opening its doors to the universe, Kayden also reduced the amount of resources available to people on the planet. This created a scenario where there were more people than resources. The former peace was gone; now, each person had to fight for even simple things like food.
The previous pride no longer existed. With scarce resources, the world became a hellish place for the weaker individuals, and it only worsened as more capable people appeared in different parts of the planet daily. This drove the world into a fast-paced cycle of development.