All ZUN provided is the base characters (which he allows others to use), and the base music (which he allows others to use), as well as some of the storyline and world elements (which he also allows others to use), while Gamefreak's Pokemon franchise is little more than inspiration and nothing beyond basic concepts remain. It's not like FocasLens didn't put in any effort into the game, making the engine, the artwork, the sprites, the maps, the enemies, the story, and providing online competitive play. If you feel that they don't deserve to turn a profit on something that they put time and effort into, that's your own opinion.