Patriarchy is a dominance hierarchy, and a zero-sum construct. If you don't win, you lose, and so it's nearly impossible for these guys to envision a flatter and more equal playing field, by gender, race, sexuality, etc. For them it's always a pyramid of power, and if they aren't at the top, that means they will be at the bottom. It's kind of sad in a way that they cannot process gains for anyone else as anything other than a loss for them, but that's what our culture has taught them.