The Left were winning before the internet blew up and continued to win after because they dedicated an extraordinary amount of time, wealth, and human resources to seizing the institutions that are the most valuable to shaping the future of society right before the United States became a hegemonic force that occupies every corner of the globe. Ideologically capturing the United States at such an opportune time resulted in the capture of all of its vassal states, which shut out reactionaries all throughout the Western world.
The Right doesn't lose because they're fractured. The Right always loses because they closed their eyes, plugged their ears, and allowed the Left to determine what the "center" would be following the end of WW2. The results of that are self evident. Now if you're on the Right you can't get anyone whose more reactionary than a 90s colorblind Liberal to represent your interests and god forbid they actually have any fucking integrity. That would be asking for too much.