How did Dragon Ball Z's power scaling problem define an entire genre of anime?

The answer

Akira Toriyama's Dragon Ball Z (1989–1996) introduced 'power levels' as numerical measurements of a fighter's strength. Early in the series, characters had power levels in the hundreds. By the Frieza saga, Goku's Super Saiyan transformation reached 150 million. This exponential scaling created an arms race where each new villain had to be dramatically stronger, eventually reaching cosmic and multiversal scales. This 'power creep' became the defining structural challenge of shonen anime - series like Naruto, Bleach, and One Punch Man all grapple with it. Toriyama himself admitted he abandoned numerical power levels after the Frieza saga because they became unmanageable. The concept influenced an entire generation of manga creators and became a fundamental trope in battle-focused anime storytelling.