This is how it should work, and has worked for decades, centuries even. Unfortunately more and more companies (with an emphasis on those based in Silicon Valley) feel the need to coddle users, as if they're too stupid to decide for themselves what information to believe, or even breaking down matters of opinion into the "right" opinion and the "wrong" opinion.

Make a fact checking company. Let the burden of attracting users fall on that company alone. Let them compete for ad space among users. Push the responsibility of providing an accurate and unbiased service onto them. Let them fail and go bankrupt if no one wants to use those services

In short, stop hiding behind the veil of keeping people "informed". People are as informed as they want to be, and if you truly feel people desire to know facts versus lies, make a company and compete in the free market like everyone else who has an idea to sell.