Well most games built for a desktop don't really translate well into mobile, there's a lot of stuff that requires a bigger screen to either convey information or have enough accuracy to input. Plus making a mobile version requires completely re-doing all of the controls and usually moving around the game elements to work with touch inputs. I personally also would have to pay additional fees to develop for mobile. It's a lot of effort just to appease people who just go around to random games and say "android pls".