Kessler Syndrome is fake news. Upgrade 100 meters and you're in a new, clean layer, not to mention that downgrading to a slightly more expensive orbit (atmospheric resistance) guarantees clean space, due to the continued energy requirements of orbiting objects. In simpler terms, no object incapable of continual energy output can remain in such an orbit for long.

Kessler Syndrome is fake news. Upgrade 100 meters and you're in a new, clean layer, not to mention that downgrading to a slightly more expensive orbit (atmospheric resistance) guarantees clean space, due to the continued energy requirements of orbiting objects. In simpler terms, no object incapable of continual energy output can remain in such an orbit for too long.