Final answer:
Harman and Ising left Warner Bros. due to a desire for more creative control and better financial compensation. They went on to establish their own animation studio.
Step-by-step explanation:
Harman and Ising left Warner Bros. because they wanted more creative control over their work. They felt constrained by the restrictions imposed by Warner Bros. and wanted to pursue their own vision more freely.
Additionally, Harman and Ising were also unhappy with the financial compensation they received from Warner Bros., which they felt did not adequately reflect the success of their work.
As a result, Harman and Ising left Warner Bros. and went on to establish their own animation studio, where they could have more autonomy and creative freedom.