Why don't web novels and LNs like this and i favour the villainess ever get made into anime?? They would be way better than most of the rubbish they put out each season.
I'm almost certain that I Favor the Villainess will get an anime. YagaKimi sold a million copies and the anime BDs also did quite well, and considering the decided uptick in yuri-show adaptations after that (AdaShima and Urasekai Picnic in less than six months?!), I'm pretty sure studio execs have realized that there's a fanbase out there for yuri that's willing to pay good money. All you really need is one really good anime adaptation that sells- Yuri on Ice, for instance, led to a decided uptick in yaoi anime adaptations, with Given this year and Umibe no Etranger next year, also propelled by a general softening in Japan's attitudes towards openly LGBT content.
This is a double-edged sword, of course, because money-hungry studio execs tend to run potentially lucrative ideas into the ground, giving us stuff like Assault Lily Bouquet, which might be the most cynically pandering attempt to create yuri for straight men that I have ever seen, since they constitute a much larger market than lesbians (HoloLive, incidentally, is also guilty of this). Still, as long as they're adapting from good source material, of which there is a metric ton, I think we'll be seeing a decent rise in excellent yuri anime in the next decade. Let's keep our fingers crossed.