Why did Warner Bros. Studios Stop Making the Justice League/ JLU Cartoon?

The show was THE BEST show I have ever seen in my life. Rich plot, fitting characters, excellent character models and animations, and great voice acting. I remember watching every episode as it aired on Cartoon Network when it first started airing. Now Cartoon Network just makes BS live action shows and plotless cartoons. I just wanted to know why they stopped making such an amazing series. I watched the DCAU movies that came out but the animation in them is terrible, imo. If I had the money I would bay WB just to make it.