They can't do that because it is now on the monthly event where you have to do 5 arena challenges. Plus it's also on the daily practice where you have to do two. There are also other events like Sakuras challenge and the mission dealer where you may have multiple task that could add up to more then win 10xs in the arena as well as the regular arena missions where at times if you do it right you only have to switch out one or maybe two ninjas from your main team. There maybe days where you have to do the arena 2xs a day or 20xs a day. Plus on the training side that's why it's called training...it's practice. You get nothing from it it but a win and some experience. If you quit cause you can't win on the practice side then maybe this game is not for you. The game is about fighting different players and teams. Everything you do in this game surrounds fighting other teams in pvp or pve. There are a lot of free players who compete but the reality of the matter is any game where you are a free player you will never get the same thing or have the same results as a p2w player. The game is someones business and what business do you know can stay a float with either catering or giving away everything for free.