You have to consider that CAVE is primarily an arcade developer, as are the majority of shmup developers. Their main business model revolves around making other people money by selling them games that are both compelling and difficult to keep people coming back and paying for credits. (Which does indeed lead to problems, like alienation.) If people aren't dying, operators aren't making money; you also can't have people using a machine for 30 minutes each time and only putting a single credit into it over that time because the game is so easy that they can 1LC it. That being said, CAVE has now been taking accessibility into account when it comes to home ports of their games, what with all the novice modes and such in Futari, Espgaluda II, and whatever DeathSmiles has going on.