I would like to disagree with the last part of your answer. Ash should lose due to his bad pokemon, train and grind like real people, and throw pikachu out of the building for a better mon like a legendary or a starter. Him endlessly training and grinding would be more relatable , and be a better story arc. Although it might be a bit cliche. And it might be less attractive to kids of young age. Still...... it would be more entertaining this way.