• people are very stupid and gullible, on average, and groups of people even moreso
• business people have (or are) marketing people, which is effectively the discipline of socially engineering people to buy your shit

Corporations own the media, not scientists.

People are emotionally driven. Everyone is, to an extent. Scientists are less likely to use that to support their point, or they'll have emotionally displeasing things to say.

I think the people of this country have had enough of experts

Michael Gove

Rich people own and run the media. That's just one thing that's wrong with them.