Honestly, I don't know anything about the mobile gaming market. I just know that today's younger generations have strangely fewer computers than they used to, and that many do everything on their mobiles. I'm clearly a PC gamer and very rarely play on my mobile. But I have people around me who only play my games if they're playable on mobile. So I ask myself this question and try to take it into account.
I'm in the process of creating a game that will be playable on both PC and mobile, and I'll be selling it on Steam, Itch, playstore and so on. It will be the first game I market. So it will also be a way for me to understand how it all works and where I stand in the market.
On the other hand, I'm not looking for my games to become famous or create a buzz. I just want to be able to make a sustainable living from this business. And since I don't know the mobile app market either, I'll have to try and find out. So this game, which I don't think will require much effort to produce something nice, is the perfect opportunity to give it a try :)