That's what my math prof at the university said after he asked people who thought this or that answer was right (and the majority was wrong): Science is not a democratic process.
Sadly, it has turned into one.
Peer review sadly doesn't mean what it used to mean: That a lot of others who are experts in your field took a look and nodded their heads. What it means to day: A lot of other people in your field of study think likewise.
Scientists are humans, as much as they try to sit on high horses and claim they ain't. They don't like being wrong. They don't like to give someone else the satisfaction of coming up with some paradigm shifting discovery. And most of all they certainly do not want to admit that they wasted their life hunting the rabbit down the wrong hole.
Imagine we'd only discover today that the sun, not earth, is the center of our solar system. You think any of the scientists who invested their whole life perfecting deferent and epicycle calculation would budge to the overwhelming proof that they're wrong?