When we teach boys that there are “boy’s toys” and “girl’s toys,” and that they ought to complain if they get the wrong one, we teach them gender-based entitlement. When we teach girls that it’s okay to play with toys designed for boys and to dress in clothes designed for boys, but we teach boys that it’s wrong for them to wear dresses or play with “girl’s toys,” we erase girls from social relevance. Ultimately, it becomes easier for companies to just make what boys and men are willing to use, because girls and women will be willing to use them, too.