Originally Posted by Syncos
He did. it was Batman Beyond...
... It did rather well.
But that was not a teenage Bruce Wayne.
This series is changing one of the key aspects of Tony Stark's character just so the young kids who watch the show can "relate" to him. Batman the Animated series did not change Bruce Wayne into a teenager, and lots of kids loved it. The main character of animated/kids shows does not need to be young for kids to like them.