One comment said their son did well at piano, causing their daughter to give up, causing the son to stop in sympathy. I don't have kids, but I thought maybe if

One comment said their son did well at piano, causing their daughter to give up, causing the son to stop in sympathy. I don't have kids, but I thought maybe if they tied each child's reward to how well their siblings did. Does anyone have any experience with this sort of incentive structure?