I wouldn't say Sonic was doing so hot for them. After the reboot, comics were doing 8,000-10,000 sales with some arcs dropping into 6,000 (I think it was spark of life that didn't sold well.) I even remember last year Jughead was outselling Sonic for a couple of months. Maybe in the long it wasn't worth it for Archie to keep paying for the license and for Sega to keep dealing with them. This way Archie can focus on Archie and Riverdale (which btw guys it's actually doing good contrary to popular belief) and Sega can find a better home for Sonic. Sucks that the 300 milestone wasn't reached and that Mega Drive wasn't concluded though but life's a bitch I guess.