They did initially and then... idk, decided not to? No idea about why.

"I did a pilot for it several years ago, to see the viability of it coming back, and everybody went nuts. And they are bringing it back, and they're hiring somebody else to do Terry McGovern's role of Launchpad, and they're hiring somebody else to be Darkwing Duck," Cummings told Collider at the premiere of "Coyote vs. Acme." "I hope they get … everything they deserve. Crazy, I don't know what to tell you."