No idea on other computer games as the only other thing I do is a puzzle, Sudoku.
You had to go through some kind of training to climb into a fighter or bomber, or even a jeep, during the real war, yea its NOT real but the principal holds I think, There is a level of skill required to fly or play the game. Having some direction to get a new player that skill level can only be good. Doubt they want to pay $15 just to train so that issue needs fication from clara.
Discount while training, if you keep training you earn a discount on monthly cost for as long as you train, have to test or determine skill level for advancement, just a few items for clara.