I believe they have a contract with Mark Miller. They paid for his universe with the intent of creating a number of series--they wanted their own shared universe (most likely)--it doesn't seem they are prepared to give that up. I have not finished watching this series yet--it is just dull to me. But it is not the concept that is the problem. It is the execution. It is middle of the road at best. I can't take the "serious tone" seriously as there is not much depth to the themes or the plot, the characters are dull, and it is pretty heavy handed without having anything to be heavy handed about.