>>19488158
>>19488170
>>19488391
Doing an anime adaptation isn't about selling the anime, it's promoting the sales of source material. No new light novels, nothing new to promote, so no new anime. That being said, in Haruhi's case the anime was so fucking popular that just making new seasons could have ended up profitable (and there was about four volumes worth of material left), but Kadokawa decided to push Nichijou for similar levels over the top merch sales (2-episode volumes, character song CDs for every single character, tons of posters and other crap) but it failed because gag anime don't sell well in general, especially ones as absurd as Nichijou.
>>19487354
The only thing Hirano killed was her personal popularity, and she did that by her own will since she prefers being a normalfag star rather than top tier seiyuu (eg. appearing as random token female celebrity in second rate variety shows).