In many industries and fields, speaking the truth isn't well-received because lies align with the beliefs of the masses and serve the interests of those in power.
There are actually few honest people amongst us, but the dishonest ones are just do much that we cannot feel the impacts these good ones make. Even in the political setting, I do believe that their are some politicians who sincerely want to deliver to the people all they promised the people, but the channels with which these promises will get to the people are blocked or hijacked by the bad ones. No one now is really interested in the collective welfare of everyone, they are interesting in themselves alone and these is why bad politicians and bad people in authority always have the opportunity to bribe the people and make them suffer afterwards. The society loves lies now, so speaking the truth is now an act only for heroes and courageous people who would expect nothing in return.