This has been disproven many times. People with commercial and political and other motives can write Wikipedia's content, which can be much more damaging than c

This has been disproven many times. People with commercial and political and other motives can write Wikipedia's content, which can be much more damaging than clearly marked ads. Also, since Wikipedia copied, regurgitated, and sometimes introduced errors in content from a commercial site (which you don't consider trustworthy), it is obviously not any more trustworthy.