An even bigger fact is that quality is the standard of competition in the global market. Those facts don't win converts because people don't operate factually. They operate emotionally, and emotion is controlled by belief. The accepted estimate is that only 10 to 40 percent of the information each of us carries around mentally is fact. Once those erroneous beliefs are in our minds, getting them out is always tough and occasionally impossible.
People deeply resent being told that part of what they believe is wrong.
All the world's religions are based on belief. We are hampered. Only a relatively few people oppose quality methods. Most who resist are only clinging to what they believe, unable or unwilling to change no matter what the facts may be. That mind-load of beliefs and myths, many so deeply ingrained we aren't even aware we have them, bogs us in a mire of immobility.