For Adventure Time, Regular Show, and other cartoons, we get 20-25 episodes per season and it takes only a month to start up another season.
But for Superjail, we have to wait an entire YEAR to get SIX EPISODES.
We’re lucky we got 10 episodes 4 the first three seasons.
…
We also should not forget that shows like Adventure Time gain extra revenue from merchandise like toys, clothing, and branded accessories. Between Superjail being done completely in-house and without extra income, it shouldn’t be any surprise that they can’t afford to make seasons as long as shows that run on prime time on CN.
^ These are also very good points, for anyone else curious about the matter.
Past interviews with the crew seem to indicate that the higher-ups are in charge of any merchandise deals (or importation/licensing for overseas countries), and it seems like Superjail! is a hard sell or something that executives would drag their feet on.