Remkon
Chameleon Enthusiast
A cat gives birth to it's young and nurtures and raises them until they are ready to vent for themselves...Besides, for the most part, these chameleons were born into captivity, and have been around people from day one. A cat born into captivity is more friendly and social than a feral alley cat, and I think this does apply to chameleons, if not quite to the same extent.
A cat may be a solitary animal by nature but certainly has social capabilities because of this. Humans made use of this trait and over hundreds of years of breeding and exploiting this trade created your housecat.
Chameleons meet only to mate, they lay their eggs and abandon them. If they encounter their offspring it's food. They don't have a social bone in their bodies. Humans are not keeping these animals for long and have no reasons for selective breeding to create a more affecrionate chameleon.
It's comparing apples to pears.