Why does Wallenstein consider joining the enemy in Friedrich Schiller’s play?

In Friedrich Schiller’s dramatic trilogy, the protagonist Albrecht von Wallenstein considers defecting to the enemy primarily because he is consumed by a profound lust for power.1

Schiller portrays Wallenstein as a complex figure who becomes so emboldened by his own ambition that he views himself as standing above conventional moral boundaries of good and evil. Driven by this desire to secure and expand his influence, he engages in a treasonous plot to abandon his service to the Holy Roman Empire and defect to the enemy, believing this move will ultimately allow him to seize greater authority.1