A business idea is designed by choice, not random selection. You look at the world around you and, hoping to give your fledgling creation the best chance of survival, you create your business based on the climate and conditions you find. Sure, it will hopefully grow and adapt on its own, eventually morphing into something hardly recognizable. But at the beginning, when it is young and weak and easy to kill, the better you design it to survive the harsh winters, predators and scarce resources, the higher the chances it will live to fight another day.
No guarantees, just a better shot.