So yeah, I was obviously wrong with those hasty conclusions. Guess I was still hevily influenced by Oshi no Ko and its whole depiction of "Japanese" showbiz. At the end of the day, decision to greenlight a new season (or new adaptation) comes down to potential profit (merch, DVDs, source manga sales). How do they calculate this potential? - Audience loyalty, manga popularity, luck... honestly, who the hell knows. Kin-iro Mosaic got luckier than Blend S, which is why it got way more anime content (and higher sales overall). Also, Hidamari Sketch is (obviously) a massive hit in Japan rather than globally, which explains why it has so many seasons [google "TV anime sales ranking hidamari sketch"].

I surprised that Minami-ke is as popular as 1st season Gochiusa: 179位 vs 182位. Gonna try it on this week (I even forgot how long ago I added it in my towatch list).