Some game apps are truly frustrating, specially those with plenty of ads. It seems that market has devoted to 'candy-crush' or 'dress your pony' games. But then you can stumble upon games like 'Monument Valley' or simply '2048'.
I create html5 puzzles and I am truly interested in what kind of games people are interested (in puzzle genre). When it comes to monetization, I'm trying with rewarded-donation with patreon, but it seems there is no good solution, even with free to play games!
I did, but I try to do games that I like to play, trying to minimize obstacles for the players.
This doesn't mean that the book should be burned; it has some great articles on how to improve usability or minimize friction.