Why is that? Is the world so unfair?
Actually, it might be because the other guys took the time and invested the effort to build a movement. They showed up, every time, again and again. They never contemplated that they might lose, even though they're wrong, sub-par or not as good as you are. Their operating system, corporate structure, political ideas or economic approach won.
Perhaps they told a story that resonated, one that resonated not with the better angels of our nature, but with our urgent desires. And most probably, they built a tribe, not one in their image, but in the image (and dreams) of those that wanted to belong.
But mostly, it's because they were prepared to spend a decade (or two or three) to change the culture of their part of the world in the direction that mattered to them.